Walkersele® Radial Lip Seals Issue 45.2

• High-efficiency rotary lip seals • Long-life bearing protection • On-Site Joining for downtime savings • 1000s of standard sizes • Custom-designed specials

High Performance Sealing Technology MainIntroduction Page or to Subject Walkersele Heading®

James Walker Walkersele® — a worldwide reputation

James Walker is a dynamic global manufacturing Walkersele® is our well-proven family of radial lip seals for organisation that supplies a vast range of specialised rotating shafts and rotary plant, such as: products and services to virtually every sector of industry. • Gearboxes • Rolling mills We have more than 50 production, engineering, distribution and customer support facilities worldwide — backed by • Marine propulsion units extensive IT networks, secure e-commerce systems, and • Wind turbines logistics operations — to serve customers in over 100 • Hydropower countries. • Wave and tidal energy schemes Our world-leading areas of expertise are high performance • Process mixers and centrifuges fluid sealing, bolting technology and engineering plastics. • Conveyor systems These are mainly materials-led, and range from research, • Winding gear. development and manufacture to product application and plant refurbishment. Many industries across the world rely on Walkersele to: Protect bearings Together with associated knowledge-based services, they help • to keep industry running safely and efficiently, year after year. • Prevent ingress of water and other media • Keep lubricant contaminant-free • Prevent oil and grease from spoiling finished products.

Moreover, design engineers and plant operators rely on our pedigree in high performance sealing technology, with full technical back-up, to provide optimised solutions to their specific fluid sealing problems.

2 To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz Contents

Page Page Why you fit Walkersele® 4 Special features 25-27 ® Walkersele® selection 5-9 Walkersele SpringSafe 25 ® Seven simple steps to Walkersele® selection 6-7 Walkersele SpringCover 25 Performance Table 1: Maximum working pressure 6 Walkersele® with Dust Lip 25 Performance Table 2: Walkerseles with retaining plates 8 Walkersele® Shallowback designs 26 Performance Table 3: Self-retaining Walkerseles 9 Walkersele® Long Lip 26 Walkersele® with Ports & Grooves 26 Materials technology 10-11 Endless-type Walkerseles 27 Walkersele® materials 12-14 Split-type Walkerseles 27 M1 — nitrile (NBR) 12 Walkersele® M1/D6 standard range — inch & metric 28-29 M5 — butyl (IIR) 12 JW Chart 56 inch sizes 28 M6 — nitrile (NBR) 12 JW Chart 57 metric sizes 29 M8 — fluoroelastomer (FKM) 12 M9 — fluoroelastomer (FKM) 12 Walkersele® M6/D6 standard range — inch & metric 30-32 M11 — nitrile (NBR) for marine and power train duties 12 JW Chart 104 inch sizes 30 M12 — nitrile (NBR) 13 JW Chart 105 metric sizes 31 M13 — nitrile (NBR) 13 JW Chart 376 metric sizes to DIN 3760/BS ISO 6194-1 31-32 M22 — hydrogenated nitrile (HNBR) for wind turbines 13 Housing design & machining requirements 33-34 Millglide — hydrogenated nitrile (HNBR) for rolling mills 13 Walkersele® fitting techniques 35-38 Supaglide — hydrogenated nitrile (HNBR) for rolling mills 13 Operational considerations 39-41 Ultraglide — optimised hydrogenated nitrile (HNBR) 14 Multi-seal configurations 39 Aflas® — tetrafluoroethylene-propylene (FEPM) 14 Seal lubrication 39 ® Walkersele designs 15-20 Eccentricity limits 40 ® Walkersele D6 — most popular design 15 Lip support plates 40 ® Walkersele D7 — pressure resistant 16 Shaft features — general requirements 40 ® Walkersele D8 — for marine propulsion and processing 16 Shaft surfaces; Shaft hardness; Ceramic shafts 41 ® Walkersele D1 — original design 17 Housing surfaces 41 ® Walkersele D5 — compact design 17 Walkersele® storage 41 Walkersele® D4 — for slow rotary duties 17 Other rotary seal types 42 Walkersele® TBMS — for tunnel boring machines 18 End face seals or V-rings 42 Customised design & testing 19-20 Metal cased lip seals 42 Typical applications 21 James Walker in action 43-44 Walkersele® OSJ-2 for On-Site Joining 22-23 Industry-wide applications 45 Special arrangements for worn shafts 24 Information — Alphabetical index of products & materials 46 Walkersele® Cartridges 24 Spacer rings 24 Technical guides 47 Walkersele® Shaft Sleeves 24 James Walker worldwide support & distribution 48

To order or get further details, call your local contact 3shown on rear cover or listed at www.jameswalker.biz 3 Why you fit Walkersele®

Higher efficiency — lower running costs Constant development & innovation

The primary role of a Walkersele® is to maintain lubricant within When our extensive standard ranges of Walkersele cannot a bearing assembly. It will effectively: solve a particular problem, we can custom design and • Extend bearing life and improve plant reliability. manufacture a special lip seal that will (see pages 19-20). We often use state-of-the-art finite element analysis (FEA) to • Cut maintenance costs and downtime. fine-tune the design, then extensively test the prototypes on • Reduce lubricant loss and costs. static and dynamic rigs prior to field trials. • Help prevent lubricant-contamination of process fluid and/or the environment. Over the past 60 years of Walkersele history, our constant programmes of research and development have introduced • Cut power consumption with low-friction running. great improvements in materials and design for radial lip seals. • Reduce corrosion caused by dissimilar metal interfaces. This work enables Walkersele to meet current operational challenges: When manufactured with a secondary lip, or fitted in a • Severe mechanical conditions on giant offshore wind turbines. back-to-back configuration, Walkerseles will also: • The hot and abrasive environment of high-speed rolling mills. • Prevent ingress of water, process media or solid contaminants to the bearing. • Below the water line on marine propulsion systems and tidal energy schemes. • Increase lubricant life by reducing contamination from external media.

Standard elastomer-proofed fabric back Walkerseles are Flexible manufacturing manufactured with an interference fit within the housing bore. This puts the elastomer into compression on the shaft, rather We have thousands of mould tools for Walkersele production, than into tension as found on metal cased seals. covering virtually all shafts of metric and inch standard sizes, plus hundreds of non-standard sizes. The list grows constantly. Seals with lips under tension around the shaft will generate Our flexible manufacturing regime enables us to produce more heat, and can wear more rapidly, than seals under Walkerseles to meet tight deadlines— and our Express Service is compression. This compressive load provides a distinct designed to meet industry’s most urgent over-night demands. advantage when a retaining plate is used. At our Cockermouth facility in the UK, we have one of Europe’s largest elastomeric moulding presses for making seals up to 2.2m OD (87 inch) in a single pass. But this does not limit the size of a Walkersele, as we mould to unlimited diameters using a special technique — the record stands at 11m (36ft) diameter.

For customers in the USA, our Glenwood, Illinois, facility supplies a fast turn-round of Walkerseles using special temporary tooling that is ideal for short production runs and prototyping.

4 To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz Walkersele® selection

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TBMSTBMSTBMSTBMS D4D4 Int.D4 Int.D4 Int. Int.ShallowbackShallowbackShallowbackShallowbackLongLongLong LongLip Lip Lip Lip TBMSTBMS D4D4 Int. Int. ShallowbackShallowback LongLong Lip Lip TBMSD4D4 Int. Int. D4 Int. Shallowback TBMSTBMSTBMSTBMSTBMSTBMSTBMS D4D4D4 Int.D4 Int.ShallowbackD4 ShallowbackInt. Int.ShallowbackShallowbackShallowbackShallowbackShallowbackLongLongLong LipLong LongLipLong LipLong LipLongLip Lip Lip Lip TBMSTBMS D4D4 Int. Int. ShallowbackShallowbackLongLong Lip Lip Note: These diagrams are for illustrative purposes only. Do not scale.

To order or get further details, call your local contact 5shown on rear cover or listed at www.jameswalker.biz 5 Walkersele® selection

Seven simple steps to Walkersele® selection

Walkersele® radial lip seals are identified: • Firstly by their Materials of construction (M1, M8, etc) • Then by their Design (D6, D7, etc).

Using this convention, typical designations are: • Walkersele M1/D7 and • Walkersele Ultraglide K/D6.

To help you select the correct Walkersele for your application, please consider your seal requirements in the sequence outlined below.

Step 1: Maximum working pressure Step 2: Operational parameters Maximum working pressure is the primary parameter that determines the most suitable Walkersele design for a specific Determine the following parameters for your specific application. Please refer to Performance Table 1. applications. (Note that maximum pressure, velocity, and temperature ratings should not be applied simultaneously to a PERFORMANCE TABLE 1: Maximum working pressures Walkersele – if in doubt, please consult our Technical Support Team for recommendations.) Maximum working Walkersele® design pressure recommendations • Maximum under-lip working temperature of seal. 20kPa/0.2bar (3psi) D6* or D6/DL Note that under-lip temperature can be substantially higher (eg, by 30°C or 54°F), than the fluid media temperature. 150kPa/1.5bar (21.75psi) D8 with heel support • Maximum shaft surface speed. 200kPa/2.0bar (29psi) D6 with lip support plate • Fluid media to be retained.

400kPa/4.0bar (58psi) D7 with heel support Step 3: Seal retention method >400kPa/4.0bar (58psi) Special D7 configurations — please consult our Technical Determine whether the seal will be Retained in its housing by a Support Team bolted plate, or Self-retaining in an open housing. * For higher pressure applications with D6 on intermittent duties, please consult our Technical Support Team. Step 4: Performance Tables 2 & 3 We recommend you use our Walkersele D6, D6/DL or D7 designs wherever possible for industrial duties, and our D8 For Retained seals, refer to Performance Table 2 on page 8. for marine propulsion as well as industrial processing duties. For Self-retaining seals, refer to Performance Table 3 on page 9. Between them, they cover the vast majority of radial lip seal applications. Cross-reference your suggested Walkersele design from Step 1, with maximum working temperature and surface speed (Note that we do not recommend using a seal with a pressure to find the Walkersele types that most closely match your rating that is higher than actually required – eg, as a safely requirements. factor – as lip loads will be unnecessarily higher.)

If these designs are unsuitable, please consider our alternatives, such as D1, D4, D5, TBMS, or a custom-designed seal.

6 To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz Main PageWalkersele or Subject® selectionHeading

Step 5: Material compatibility • Walkersele SpringCover: provides external and internal corrosion protection for spring-energised lip seals (page 25) Check that the seal material/s are compatible with your fluid media by referring to Walkersele® materials on pages 12 - 14. • Walkersele with Dust Lip (eg, D6/DL): standard designs with If in doubt, please consult our Technical Support Team. an auxiliary dust lip incorporated to prevent the ingress of contaminants in aggressive environments (page 25).

Step 6: Walkersele® operational features • Walkersele Shallowback: D6 and D7 designs with reduced depth at the back, and flexible, extended lips, for use where Please consider and check the availability of the following housing space is limited (page 26). options for your combinations of Walkersele Materials/Design. • Walkersele Long Lip: for sealing slowly rotating shafts that • Endless or Split type seals. Endless types offer maximum suffer a high degree of eccentricity (page 26). sealing integrity, and can be used in an open housing when in Self-retaining form. Split types are swifter and easier to install during maintenance as plant strip-down is minimised. Step 7: Ordering your Walkersele®

However, abutting seal ends is NOT recommended when: Please check the size of Walkersele you need against our a) Shaft dynamics are severe. Standard Ranges (pages 28 - 32) then call to your local James b) High integrity sealing is required. Walker contact for advice on product suitability and delivery. c) Oil levels are above the centre line of the shaft. If the seal you want is not listed, please refer to your James Walker contact, as we have thousands of Walkersele moulds When any of these conditions apply, please consider including a vast number of non-standard sizes. using our Walkersele OSJ-2.

(Note that Walkersele D7 and D8 designs are supplied only as endless or OSJ-2 types.)

• Walkersele OSJ-2 for On-Site Joining of split-type seals. This technique combines cost-effective maintenance with greatly reduced down-time, and provides the sealing integrity of an endless-type seal (pages 22 - 23).

• Walkersele SpringSafe: to keep the lip-energising spring securely in place during installation and operation (page 25).

• Walkersele with Ports & Grooves: to distribute lubricant to the lips of seals working in back-to-back formation (page 26).

To order or get further details, call your local contact 7shown on rear cover or listed at www.jameswalker.biz 7 Walkersele® selection

PERFORMANCE TABLE 2: Walkerseles for use with retaining plates

Walkersele® type Materials Maximum Maximum Comments under-lip constant temperature* surface speed* M1/D6 Nitrile (NBR) + proofed fabric 120°C (248°F) 15m/s (2953fpm) Most popular Walkersele for industrial duties. M1/D6/DL Nitrile (NBR) + proofed fabric 120°C (248°F) 15m/s (2953fpm) M1/D6 with auxiliary dust lip. M1/D7 Nitrile (NBR) + proofed fabric 120°C (248°F) 12m/s (2362fpm) Popular, well-proven seal with pressure-resistant lip. M1/D8 Nitrile (NBR) + proofed fabric 120°C (248°F) 15m/s (2953fpm) Pressure resistant with lower lip loading. M5/D6 Butyl (IIR) + proofed fabric 120°C (248°F) 5m/s (984fpm) For specific chemical compatibilities. M5/D6/DL Butyl (IIR) + proofed fabric 120°C (248°F) 5m/s (984fpm) M5/D6 with auxiliary dust lip. M5/D7 Butyl (IIR) + proofed fabric 120°C (248°F) 5m/s (984fpm) Pressure resistant lip + specific chemical compatibilities. M9/D6 Fluoroelastomer (FKM) + 200°C (392°F) 25m/s (4922fpm) For high temperatures & speeds, where chemical aramid/glass fabric compatibility is important. M9/D6/DL Fluoroelastomer (FKM) + 200°C (392°F) 25m/s (4922fpm) M9/D6 with auxiliary dust lip. aramid/glass fabric M9/D7 Fluoroelastomer (FKM) + 200°C (392°F) 20m/s (3937fpm) Pressure resistant lip + high temperatures, aramid/glass fabric speeds & chemical resistance. M9/D8 Fluoroelastomer (FKM) + 200°C (392°F) 25m/s (4922fpm) Pressure resistance with lower lip loading + high aramid/glass fabric temperatures, speeds & chemical resistance. M11/D6 Nitrile (NBR) + aramid/glass 120°C (248°F) 15m/s (2953fpm) For marine duties & other water-based applications. fabric M11/D7 Nitrile (NBR) + aramid/glass 120°C (248°F) 12m/s (2362fpm) For marine duties & other water-based applications. fabric M11/D8 Nitrile (NBR) + aramid/glass 120°C (248°F) 15m/s (2953fpm) For marine duties & other water-based applications. fabric

M12/D6 Nitrile (NBR) + proofed fabric 110°C (230°F) 15m/s (2953fpm) Material for lower temperature duties. M13/D6 Nitrile (NBR) + aramid/glass 110°C (230°F) 15m/s (2953fpm) Material for lower temperature duties. fabric M22/D6 Specially formulated HNBR 150°C (302°F) 15m/s (2953fpm) For wind turbines. + aramid/glass fabric Millglide K/D6 Reformulated HNBR + 150°C (302°F), 15m/s (2953fpm) The cost effective choice for rolling mills, where aramid/glass fabric or 170°C (338°F) assured performance is needed to fulfil in oil maintenance regimes. Supaglide K/D6 Reformulated HNBR + 150°C (302°F), 25m/s (4922fpm) For rolling mills, where improved performance aramid/glass fabric or 170°C (338°F) and wear resistance are needed at higher in oil running speeds. TBMS Nitrile (NBR) proofed fabric 120°C (248°F) 2m/s (394fpm) Tunnel boring machine seal for harsh underground duties. Ultraglide K/D6 Reformulated HNBR + 150°C (302°F), 20m/s (3937fpm) Optimised material for greatly extended working aramid/glass fabric or 170°C (338°F) life under high speed and high temperature in oil conditions. Ultraglide K/D7 Reformulated HNBR + 150°C (302°F), 15m/s (2953fpm) With pressure resistant lip. For extended working life aramid/glass fabric or 170°C (338°F) under high temperature conditions. in oil

* Note that maximum temperature, speed and pressure ratings may not necessarily be applied simultaneously to a Walkersele® — please consult our Technical Support Team for recommendations.

Other, less common, combinations of material and Walkersele® design are also available: please consult our Technical Support Team.

8 To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz Walkersele® selection

PERFORMANCE TABLE 3: Self-retaining Walkerseles

Walkersele® type Materials Maximum under-lip Maximum Comments temperature* constant surface speed*

M6/D6 Nitrile (NBR) + stainless 120°C (248°F) 12m/s (2362fpm) Most popular self-retaining Walkersele. steel band

M6/D6/DL Nitrile (NBR) + stainless 120°C (248°F) 12m/s (2362fpm) M6/D6 with auxiliary dust lip. steel band

M6/D7 Nitrile (NBR) + stainless 120°C (248°F) 10m/s (1969fpm) Well-proven seal with pressure-resistant lip. steel band

M6/D8 Nitrile (NBR) + stainless 120°C (248°F) 12m/s (2362fpm) Pressure resistant, with lower lip-loading. steel band

M8/D6 Fluoroelastomer (FKM) + 200°C (392°F) 20m/s (3937fpm) For high temperatures and speeds where stainless steel band chemical compatibility is important.

M8/D6/DL Fluoroelastomer (FKM) + 200°C (392°F) 20m/s (3937fpm) M8/D6 with auxiliary dust lip. stainless steel band

M8/D7 Fluoroelastomer (FKM) + 200°C (392°F) 18m/s (3543fpm) With pressure-resistant lip; for high stainless steel band temperatures, high speeds, and chemical compatibility.

M8/D8 Fluoroelastomer (FKM) + 200°C (392°F) 20m/s (3937fpm) For high temperatures and speeds where stainless steel band chemical compatibility is important.

Millglide D6/M Reformulated HNBR + 150°C (302°F), 12m/s (2362fpm) The cost effective choice for rolling mills, stainless steel band or 170°C (338°F) where assured performance is needed to fulfil in oil maintenance regimes.

Supaglide D6/M Reformulated HNBR + 150°C (302°F), 20m/s (3937fpm) For rolling mills, where improved performance stainless steel band or 170°C (338°F) and wear resistance are needed at higher in oil temperatures and running speeds.

Ultraglide D6/M Reformulated HNBR + 150°C (302°F), or 15m/s (2953fpm) Optimised material for greatly extended stainless steel band 170°C (338°F) in oil working life and high temperature conditions.

Ultraglide D7/M Reformulated HNBR + 150°C (302°F), or 15m/s (2953fpm) With pressure resistant lip. For extended stainless steel band 170°C (338°F) in oil working life and high temperature conditions.

* Note that maximum temperature, speed and pressure ratings may not necessarily be applied simultaneously to a Walkersele — please consult our Technical Support Team for recommendations.

Other, less common, combinations of material and Walkersele® design are also available: please consult our Technical Support Team.

To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz 9 Materials technology

It is essential that your Walkersele® is manufactured from Overview of elastomers materials that are: • Chemically compatible with the media to be sealed. We commonly use five generic elastomer types for the • Stable at the required working temperature. Note that the manufacture of Walkersele radial lip seals. seal’s under-lip temperature can be substantially higher — by • Nitrile (NBR). 30°C (54°F) or more — than that of the fluid being contained. • Hydrogenated nitrile (HNBR). • Wear resistant at the operating conditions. • Butyl (IIR) – isobutene-isoprene. • Suitable for your operating speed. • Fluoroelastomer (FKM). • Tetrafluoroethylene/propylene dipolymers (FEPM) eg, Aflas®. The importance of elastomer compounding Although many manufacturers use the same base polymers for Nitrile (NBR) their elastomeric compounds and seals, the resulting products Nitrile rubbers are good, general-purpose, oil/fuel resistant may perform in significantly different ways — sometimes as materials that are much less expensive than more complex disparate as short-term failure against long-term service. high-performance elastomers. They offer good resilience for high integrity sealing in general applications. A base polymer is made into an engineering elastomer through the addition of a multitude of compounding chemicals. It is Typical temperature range: -30°C to +120°C (-22°F to +248°F). the nature and combination of these chemicals that define the Low temperature grades can operate down to -50°C (-58°F). characteristics of an elastomer. They are manufactured by the copolymerisation of butadiene In excess of 20 classes of compounding ingredients exist. and acrylonitrile. The acrylonitrile content has by far the most These range from reinforcing fillers, curatives, accelerators, profound effect on the properties of a vulcanised nitrile rubber, protectants, coupling agents and fire retardants, through to influencing such characteristics as oil resistance and low extenders and processing aids — enabling an almost infinite temperature flexibility. variety of grades to be compounded. Hydrogenated nitrile (HNBR) Seal users and specifiers need to satisfy themselves that their These materials have the excellent oil/fuel resistance of NBR, suppliers operate a no-compromises policy with regard to combined with superior mechanical properties, improved compounding, using only the highest quality raw materials chemical resistance, better weatherability, better thermal purchased to rigorous specifications, then judiciously capability, and outstanding abrasion resistance. compounded to give optimum properties. In general, HNBR grades tolerate higher surface speeds and It is easy to dilute expensive specialised materials with cheaper temperatures, and offer longer working lives for rotary seals in ingredients to lower the final cost of a compound, or to add abrasive environments, than NBR materials. large quantities of processing aids that ease production. These policies often lead to impaired performance. Typical temperature range: -25°C to +150°C, or +170°C in oil (-13°F to +302°F, or +338°F in oil). Lower minimum or higher maximum temperatures can be achieved.

Hydrogenated nitrile is derived from conventional nitrile. It is produced by a process that hydrogenates the unsaturation (carbon double bonds) in the butadiene unit of the polymer.

Butyl (IIR) – isobutene-isoprene IIR compounds display low permeability to gases. They also have excellent resistance to ozone, weathering, hot and cold water and steam. Resistance to many chemicals is good, including acids, alkalis, salt solutions, alcohols, glycols and silicone oils. However, it has very poor resistance to mineral oils and hydrocarbon fuels.

Typical temperature range: -35°C to +120°C (-31°F to +248°F).

IIR is produced by copolymerising isobutylene in solution with low concentrations of isoprene. Both isoprene and isobutylene are usually obtained from natural gas or the lighter fractions of petroleum.

10 To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz Materials technology

Fluoroelastomer (FKM) Standard & customised materials Fluoroelastomers offer excellent resistance to oils, fuels, synthetic lubricants, many mineral acids and a vast range of All our elastomer-based material grades featured on the other fluids. They have a higher temperature capability than following pages have been specially developed for radial lip NBR and HNBR grades. seal duties.

Typical temperature range: -20°C to +230°C (-4°F to +446°F). We compound all the elastomers in-house on a state-of-the- Lower minimum temperatures can be achieved. art internal mixer to an exacting regime with total traceability. Each batch of compound is subjected to rigorous testing and Thermal and chemical resistance are functions of fluorine statistical process control before being converted to the final level and cure system (but poor compounding can ruin the product. best elastomer). To get the optimum properties, including mechanical in addition to thermal and chemical resistance, When our standard materials are unsuitable for your we make our fluoroelastomer Walkerseles from terpolymer application, we have the capability to tailor a compound to compounds. meet your specific operational requirements, typically for: There are three basic families of fluoroelastomer: • Higher or lower temperature duties. • Dipolymer; containing two components. • Additional ozone resistance. • Terpolymer; with three components – as typically used in • Additional abrasion resistance. Walkersele manufacture. • Eco-friendly fluid compatibility. • Tetrapolymer; with four components. • Lower power consumption.

Fluorine content varies from 65% in dipolymers to over 70% in Technical advice some tetrapolymers. If you have any special material requirements, or want advice on materials selection, please contact our Tetrafluoroethylene/propylene dipolymers (FEPM) eg, Aflas® Technical Support Team. FEPM compounds have resistance to oils, lubricants, and some fuels, approaching that of fluoroelastomer dipolymers. They also have excellent resistance to ozone/weathering, steam and radiation. Overall chemical resistance is good.

Typical temperature range: +5°C to +200°C, or +260°C in steam (+41°F to +392°F, or +500°F in steam).

Fluorine content is around 56%, with the synergy between the monomer units resulting in a very useful, if specialised, material.

Quality assured in-house compounding of high performance elastomers

To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz 11 Walkersele® materials

M1 — nitrile (NBR) M8 — fluoroelastomer (FKM)

Description: This is our most popular material for the majority Description: For high working temperatures, or where of Walkersele® applications. It suits housings fitted with fluoroelastomer is needed for chemical compatibility. Suitable retaining plates. for self-retaining seals installed in open housings.

Media compatibility: Suitable for duties with water and the Media compatibility: Excellent resistance to all lubricating oils, majority of oils and greases. fuels, air, water and dilute acids.

Seal construction: Flexible back of nitrile-proofed fabric, Seal construction: Moulded in fluoroelastomer, with stainless with lip of 80 IRHD nitrile rubber. steel band located in its back.

Maximum under-lip temperature: 120°C (248°F) constant. Maximum under-lip temperature: 200°C (392°F) constant.

Maximum surface speed: 15m/s (2953fpm) with D6 and D8 Maximum surface speed: 20m/s (3937fpm) with D6 and D8 designs, or 12m/s (2362fpm) with D7 design. designs, or 18m/s (3543) with D7 design.

M5 – butyl (IIR) M9 — fluoroelastomer (FKM)

Description: Often used with media where butyl is required Description: For high working temperatures, or where for chemical compatibility. It suits housings fitted with retaining fluoroelastomer is needed to accommodate high operating plates. speeds or chemical compatibility. It suits housings fitted with retaining plates. Media compatibility: Resistant to silicone oils and greases, ozone, hot and cold water, acids, alkalis, salt solutions, Media compatibility: Excellent resistance to all lubricating oils, alcohols and glycols. It must NOT be used with mineral based fuels, air, water and dilute acids. oils or greases. Seal construction: Flexible back of fluoroelastomer-proofed Seal construction: Flexible back of butyl-proofed fabric, aramid/glass fabric, with lip of fluoroelastomer. with lip of 70 IRHD butyl. Maximum under-lip temperature: 200°C (392°F) constant. Maximum under-lip temperature: 120°C (248°F) constant. Maximum surface speed: 25m/s (4922fpm) with D6 and D8 Maximum surface speed: 5m/s (984fpm) with both D6 and D7 designs, or 20m/s (3937fpm) with D7 design. designs.

M11 — nitrile (NBR) M6 — nitrile (NBR) for marine propulsion/power-train duties Description: This is our most popular material for self-retaining Description: This material has been specially developed seals installed in open housings. for marine duties and industrial applications where it will be submerged in salt water or fresh water. It suits housings fitted Media compatibility: Suitable for duties with water and the with retaining plates. majority of oils and greases. Media compatibility: Suitable for duties with water and the Seal construction: Moulded in nitrile rubber, with a stainless majority of oils and greases. steel band encapsulated in its back. Seal construction: Flexible back of nitrile-proofed aramid/ Maximum under-lip temperature: 120°C (248°F) constant. glass fabric, with lip of 80 IRHD nitrile rubber. Maximum surface speed: 12m/s (2362fpm) with D6 and D8 Maximum under-lip temperature: 120°C (248°F) constant. designs, or 10m/s (1969fpm) with D7 design. Maximum surface speed: 15m/s (2953fpm) with D6 and D8 designs, or 12m/s (2362fpm) with D7 design.

12 To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz Walkersele® materials

M12 — nitrile (NBR) Millglide K & M — hydrogenated nitrile (HNBR) for rolling mills Description: For duties where its lower temperature capability is beneficial. It suits housings fitted with Description: These materials are cost-effective choices for retaining plates. rolling chocks and heavy-duty gearboxes in the metallurgical sector. Based on reformulated HNBR, they offer a significant Media compatibility: Suitable for duties with water and the improvement over nitrile (NBR) where assured performance majority of oils and greases. is needed to fulfil maintenance regimes.Millglide K suits housings fitted with retaining plates;Millglide M is suitable for Seal construction: Flexible back of nitrile-proofed fabric, self-retaining seals installed in open housings. with lip of 70 IRHD nitrile rubber. Media compatibility: Excellent resistance to a wide range of Under-lip temperature range: mineral and synthetic lubricants. From -48°C (-54°F) up to +110°C (+230°F). Seal construction: Millglide K has a flexible back of Maximum surface speed:15m/s (2953fpm) with D6 design. HNBR-proofed aramid/glass fabric, with an HNBR lip of 80 IRHD. Millglide M is moulded in HNBR of 80 IRHD, with a stainless steel band encapsulated in its back.

M13 — nitrile (NBR) Maximum under-lip temperature: 150°C (302°F), or 170°C (338°F) in oil. Description: Similar to M11, but recommended for duties where its lower temperature capability is beneficial. It suits Maximum surface speed: Millglide K; 15m/s (2953fpm) with housings fitted with retaining plates. D6 design. Millglide M; 12m/s (2362m/s) with D6 design. Media compatibility: Suitable for duties with water and the Typical applications: Rolling chocks and heavy-duty majority of oils and greases. gearboxes. Seal construction: Flexible back of nitrile-proofed aramid/ glass fabric, with lip of 70 IRHD nitrile rubber. Supaglide K & M — hydrogenated nitrile Under-lip temperature range: From -48°C (-54°F) up to +110°C (+230°F). (HNBR) for higher speed rolling mills

Maximum surface speed:15m/s (2953fpm) with D6 design. Description: Based on reformulated, high-strength HNBR. Special additives extend the material’s performance for use in abrasive environments on higher-speed rolling chocks. Supaglide K suits housings fitted with retaining plates; M22 — hydrogenated nitrile (HNBR) Supaglide M is suitable for self-retaining seals installed in open for wind turbines housings. Media compatibility: Excellent resistance to a wide range of Description: A specially formulated HNBR for mineral and synthetic lubricants. long-term duties on main shafts and gearboxes of wind turbines operating in harsh environments. It suits housings Seal construction: Supaglide K has flexible back of fitted with retaining plates. reformulated HNBR-proofed aramid/glass fabric, with lip of 80 IRHD reformulated HNBR. Supaglide M is moulded in 80 IRHD Media compatibility: Excellent resistance to a wide range reformulated HNBR with a stainless steel band encapsulated in of mineral and synthetic lubricants. its back. Seal construction: Flexible back of HNBR-proofed Maximum under-lip temperature: 150°C (302°F), or 170°C aramid/glass fabric, with HNBR lip of 80 IRHD. (338°F) in oil. Under-lip temperature range: From -25°C (-13°F) up to Maximum surface speed: Supaglide K; 25m/s (4922fpm) with +150°C (+302°F). D6 design. Supaglide M; 20m/s (3937m/s) with D6 design. Maximum surface speed:15m/s (2953fpm) with D6 design.

To order or get further details, call your local contact13 shown on rear cover or listed at www.jameswalker.biz 13 Walkersele® materials

Ultraglide K & M — hydrogenated nitrile Aflas® — tetrafluoroethylene/propylene (HNBR) for longer working life (FEPM)

Description: Ultraglide is based on a reformulated HNBR that Description: This material uses our AF90/LS compound for extends by up to six times the working life of a Walkersele® duties in highly aggressive chemical environments with steam running in high temperature environments. Ultraglide K suits — eg, chemical pulping lines — or radioactive areas. It suits housings fitted with retaining plates.Ultraglide M is suitable for housings fitted with retaining plates. self-retaining seals installed in open housings. Media compatibility: Excellent resistance to aggressive Media compatibility: Excellent resistance to all lubricating oils, bleaching agents (particularly chlorine-free types), and high- fuels, air, hot and cold water, dilute acids and alkalis. temperature water/steam. Also resistant to strong acids, oils, lubricants and some fuels, weathering and ozone. Seal construction: Ultraglide K has a flexible back of HNBR- proofed aramid/glass fabric, with lip of special low-friction, Seal construction: Construction method is selected to suit low-wear HNBR. Ultraglide M is moulded in 80 IRHD specific applications. A modified Walkersele® D1 design is used low-friction, low-wear HNBR, with a stainless steel band for chemical pulping lines, with an unchamfered lip to prevent encapsulated in its back. build-up of abrasive pulp, and ports and grooves for inter-seal lubrication. D6 and D7 designs can be used for duties beyond Maximum under-lip temperature: 150°C (302°F) constant, and chemical pulping lines. 170°C (338°F) in oil. Maximum under-lip temperature: Please consult our Maximum surface speed: Ultraglide K; up to 20m/s (3937fpm) Technical Support Team. with D6 design, or up to 15m/s (2953fpm) with D7 design. Ultraglide M; 15m/s (2953fpm) with both D6 and D7 designs. Maximum surface speed: Please consult our Technical Support Team.

Please note that other materials are available for specific Walkersele® requirements, including the Aflas® grade as shown alongside.

14 To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz Walkersele® designs

Walkersele® designs evolve constantly to meet the needs of Walkersele® D6 — most popular design modern rotary plant working in fast moving industrial and marine environments. This is the standard Walkersele® design. It is suitable for the vast majority of bearing protection and other radial lip seal James Walker Technology Centre works at the frontiers of: applications across most sectors of industry. • Sealing technology. • Materials technology. • Tribology. • Hydraulic fluid film theory.

Its aim is to ensure that Walkersele products are ready to meet the exacting demands of tomorrow’s plant and equipment before they arise.

Spring energised lips Most Walkersele designs use a toroidal spring that lightly energises the flexible lip to ensure efficient sealing. Special features • Lip profile minimises heat generation and shaft wear. Walkerseles differ from many other manufacturers’ lip seals • Geometry gives lip flexibility to accommodate shaft in that they usually have no exposed metal components eccentricity. apart from the stainless steel spring. However, by using our • Fabric-backed (retained) versions can be supplied as SpringSafe feature (page 25) even the toroidal spring can be spit-types, and as Walkersele® OSJ-2 (pages 22 - 23) for safely cured into the lip-groove in our most popular designs if On-Site Joining. exposed metal is unacceptable. • Operates at up to 20kPa/0.2bar (3psi) pressure differential,

Product range : Date : Sketch reference : JAMES WALKER S.P.S. Ltd. Walkesele ; Rotary Seals Leaflet 1st March 2012 Page 15 - Iss 44, p13 or up to 200kPa/2bar (29psi) with lip support plate Marcoms DepartmentHousing types —Walkersele Retained ; Retained seal housing and type. Self-retaining (see page 40). Most WalkerseleRetained designs are manufactured in two versions: Seal housing Retained: These have an elastomer- Walkersele® D6 availability — standard ranges proofed fabric back for installation JW Charts 56 and 57 (pages 28 - 29) cover standard ranges of in housings fitted with retaining our Walkersele M1/D6 fabric-backed (retained) version in inch plates. The lip and back sections and metric sizes respectively. These can be supplied in endless are moulded together during or split form — note the different part numbers on charts. manufacture to form a high strength intimate bond. JW Charts 104 and 105 (pages 30 - 31) cover our self-retaining Walkersele M6/D6 seals in inch and metric sizes respectively. Retained seals are supplied endless, or as split-types for ease of fitting. JW Chart 376 (pages 31 - 32) covers self-retaining Walkersele ® Our WalkerseleProduct rangeOSJ-2 : techniqueDate : Sketch reference (pages : 22 - 23) provides the JAMES WALKER S.P.S. Ltd. Walkesele ; Rotary Seals Leaflet 15-03-2012 Page 15 - Issue 44, P13 M6/D6/M seals conforming to DIN 3760 and the equivalent BS Marcoms Departmentease of fitting Walkerseleof split-types ; Self-retaining seal housingcombined type. with the sealing integrity ISO 6194 standards, as previously covered by BS 1399. of endlessSelf-retaining types. Seal housing Self-retaining: These have a Walkersele® D6 availability — non-standard sizes solid back of the same moulded Existing tools — we have thousands of Walkersele moulds, elastomer material as the lip. A including a vast number for non-standard sizes. If the D6 size flexible steel band is incorporated in you want is not on the JW Charts, please contact us to check the solid elastomer back. They are mould availability. If we have a suitable tool, your seal can be supplied only as endless types. supplied on short delivery time without tooling charges.

Walkerseles of this construction Specials — new tools are swiftly made in-house for non-standard can normally be installed in open sizes. In such cases a tooling charge will be applied. Seals for housings without retaining plates. shaft diameters from 25mm to 2200mm (1 inch to 87 inch) are (The exceptions are our D7 and D8 produced by conventional moulding methods. Sizes above this, designs that operate under pressure and require heel support and up to unlimited diameter, are manufactured using our highly when fitted facing inboard to seal an internal pressure media.) developed mould-joining technique.

For full housing details on Walkerseles, see pages 33 - 34.

To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz 15 Walkersele® designs

Walkersele® D7 — pressure resistant Walkersele® D8 — for marine propulsion & industrial processing This is our second most popular design. Its robust profile with a pressure-resistant lip suits applications where there is a Walkersele® D8 is a recent addition to our range. Introduced pressure differential up to 400kPa, especially in the processing initially for marine propulsion applications, its trouble-free industries. operation has been proven by extensive sea trials on working vessels, backed by in-house dynamic testing to extreme levels. It is also recommended for industrial processing duties where pressure is slightly higher than D6 can accommodate, but lip flexibility is still needed to follow the eccentricity of a shaft.

Special features • Operates at up to 400kPa/4bar (58psi) pressure differential. To achieve this, the heel of the seal lip must always be supported. Special features • No costly profiled lip-support plates are needed. • New lip geometry of D8 withstands higher pressure • Self-retaining D7 seals can be used in open housings when differentials than our D6 design, with lower lip loading than sealing external fluids — but a simple retaining plate is our D7 design. needed to support the heel of the seal lip when seal is facing • Operates at up to 150kPa/1.5bar (21.75psi) pressure inboard. differential. The base of the seal must be fully supported for • Robust lip maintains sealing contact on shafts suffering slight pressures greater than 20kPa/0.2bar (3psi). misalignment or eccentricity. • Accommodates shaft eccentricity of 3.0mm TIR (typical • Fabric-backed (retained) versions can be supplied as maximum) dependent on shaft diameter and speed. Note that a modified retaining plate and/or lip support plate may Walkersele® OSJ-2 (pages 22 - 23) for On-Site Joining. be needed when shaft eccentricity occurs: please consult our Technical Support Team. Walkersele® D7 availability Existing tools — our tool library covers all popular D7 sizes • Robust lip of D8 design has been validated on marine duties and many non-standards. Please contact us to check mould where operating conditions have included shock and vibration. availability. Where we have a suitable tool, your seal will be • Recommended for marine propulsion units, azimuth supplied on short delivery time without tooling charges. thrusters, large diameter swivels, stern gland seals and flooded gearboxes. Also for process equipment — onshore, Specials — new tools are swiftly made in-house for non- as well as offshore and marine. standard sizes. In such cases a tooling charge will be applied. • Fabric-backed (retained) versions can be supplied as Seals for shaft diameters from 25mm to 2200mm (1 inch to 87 split-types and as Walkersele® OSJ-2 (pages 22 - 23) inch) are produced by conventional moulding methods. Sizes for On-Site Joining. above this, and up to unlimited diameter, are manufactured Cartridge seals can be custom-designed. using our highly developed mould-joining technique. •

Walkersele® D8 availability We recommend that D8 be manufactured in our M11 nitrile- based material (see page 12) for marine duties. This material is resistant to marine industry media, and is suitable for housings with retaining plates.

Existing tools — we are currently building a library of mould tools for D8 sizes. Please contact us to check mould availability. If we have a suitable tool, your seal can be supplied on short delivery time. New tools are swiftly made in-house.

16 To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz Walkersele® designs

Walkersele® D1 — our original design Walkersele® D5 — compact design

This non-chamfered lip design has been found to provide A radial lip seal design for very small sections. significant advantages on slow-running abrasive applications, such as chemical pulping lines in the pulp and paper industry, where its square edge prevents fibre ingress.

Special features • Very compact design, often used in endless form. • Feathered lip needs no lip spring for efficient operation. • This design of seal can be used where space limitations Special features prevent the installation of a lip spring. • Aflas © version, with ports and grooves, provides long-term • Can be supplied with an external lip for applications where protection for bearings of dewatering presses at pulp works sealing on the inner periphery is impractical. (see page 14). • Fabric-backed (retained) versions can be supplied as split- types, and as Walkersele® OSJ-2 (pages 22 - 23) for On-Site Walkersele® D5 availability Joining. Existing tools — we hold a number of tools for this design in both lip modes. Please contact us to check mould availability. Where we have a suitable tool, your seal will be supplied on Walkersele® D1 availability short delivery time without tooling charges. Existing tools — we hold many tools for this original standard design, plus specific sizes for the modified Aflas version.

Please contact us to check mould availability. Where we have ® a suitable tool, your seal will be supplied on short delivery time Walkersele D4 — slow rotary duties without tooling charge. An early design of Walkersele® that proves very efficient on Specials — new tools are swiftly made in-house for non- slow rotary duties with highly abrasive media. standard sizes. In such cases a tooling charge will be applied. Seals for shaft diameters from 25mm to 2200mm (1 inch to 87 inch) are produced by conventional moulding methods. Sizes above this, and up to unlimited diameter, are manufactured using our highly developed mould-joining technique.

Special features • Moulded entirely in elastomer-proofed fabric for abrasion resistance. • Suitable only for slow rotary duties with minimal shaft eccentricity. Pulverising mills are a typical application.

Walkersele® D4 availability This seal has been largely superseded by Walkersele® TBMS. However, we still hold mould tools to satisfy the requirements of existing users and applications. Please contact us to check mould availability. Where we have a suitable tool, your seal will be supplied on short delivery time without tooling charges.

To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz 17 Walkersele® designs

Walkersele® TBMS — tunnel boring Walkersele® success machine seal

This design is proven on many major projects, including the Tunnel boring in Australia Channel Tunnel (7.8m/25.6ft diameter) and the Airport Link Walkersele® TBMS Railway, Sydney (11m/36ft diameter). tunnel boring machine seals protected the cutting face bearings from sand and rock spoil on the 11m diameter machine that cut 6km of the fast-track Airport Link railway line beneath Sydney, Australia. James Walker supplied the seals to Special features the TBM’s German • Exceedingly robust design of radial lip seal to work for the life manufacturer, of a tunnelling project. Herrenknecht GmbH. • Moulded entirely in tough, abrasion-resistant, elastomer- proofed fabric. • Banks of seals are installed to protect the bearings of a TBM’s cutting head from water, slurries, abrasive materials, etc. • Will operate at a constant pressure differential of 300kPa/3bar (43.5psi), with excursions to 400kPa/4bar (58psi). Maximum ® static pressure differential is 1MPa/10bar (145psi). Note Walkersele success that sealing systems can be designed to step-down higher operating pressures. Side thrusters & stabilisers • Maximum shaft speed is 2m/s (394fpm). Cunard Line’s 90,000 tonne cruise ship MS Queen Victoria, Walkersele® TBMS availability has Walkerseles fitted as OEM equipment to protect its We hold a number of standard section continuous-mould stabilisers and side thrusters. tools for the production of large diameter TBMS endless seals.

As tunnel boring machines are usually custom-built for each tunnelling project, please contact our Technical Support Team at concept design stage to discuss sealing requirements in detail.

Photo by courtesy of Fincantieri SpA

Built at Fincantieri’s shipyard in Venice-Marghera, and cruising since December 2007, it is Cunard’s second largest ever ship after the Queen Mary 2 — and the first from an Italian yard.

18 To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz MainCustomised Page or Subjectdesign & Heading testing

Custom design Our custom-design skills are backed by many years’ experience of working with engineers across all sectors of The creation and production of customer-specific seals is a industry, and a fundamental understanding of all types of speciality of James Walker. We constantly design, develop, equipment that need high integrity fluid sealing systems. prototype and prove all types of fluid sealing products in partnership with major equipment manufacturers and end users.

We cover the subject here in general terms only, because most of our work at this level involves non-disclosure agreements.

Our custom design operations are usually led by the James Walker Technology Centre in the UK. This facility combines our Materials Technology, Applications Engineering, and Field Engineering teams.

Staffed with highly experienced product engineers, application engineers, materials technologists and industrial chemists, this group has the proven ability and vast technical resources needed to analyse customers’ fluid sealing requirements and to create best value working solutions.

Non-linear FEA model of Walkersele® D8

We use non-linear FEA (finite element analysis) techniques to model mathematically the behaviour of elastomeric seals under simulated operational conditions.

FEA has proved invaluable for the evaluation of design concepts, and for fine-tuning seal-profile/material combinations, prior to the manufacture and physical testing of prototypes. It is also helpful in understanding any modes of failure and poor performance characteristics that a customer may be experiencing with existing sealing systems.

In-house design of a new Walkersele®

The main benefits offered by James Walker include: • On-site analysis of customers’ sealing requirements. • Innovative design capabilities. • Extremely large range of high-performance elastomers and other materials to choose from, backed with the capability to develop and/or modify materials for specific operational parameters. • In-house computer modelling, plus banks of dynamic test rigs to simulate operating conditions accurately, to perfect the seal design. • Prototype manufacturing facilities, including CAD/CAM design and machining of customised mould tools for seal production. • Fullest knowledge of elastomer and engineering manufacturing technologies. • A lean manufacturing regime that accommodates non- CAD/CAM machining of customised mould tools for Walkersele® production standard products.

To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz 19 Customised design & testing

After fine-tuning the design using FEA techniques, the For Walkersele rotary seal testing we use: customised seal then moves to prototype production stage followed by physical testing. • Five dynamic test rigs with 24/7 data capture. • These have changeable shafts/sleeves of metal or ceramic, covering diameters of 70mm, 160mm, 330mm and 405mm. • Fluid pressures up to 2.5MPa, with test media that include mineral oils, synthetic oils, water, emulsions... • Shaft velocities up to 100m/s. • With direct torque measurement.

With this suite of rotary rigs we can undertake long-term tests on Walkerseles under closely simulated operating conditions. The 24/7 data capture facility enables exacting reports to be produced describing seal performance throughout the full duration of the tests.

Only when James Walker Technology Centre and our customer are fully satisfied with the test rig results will the new custom- designed seal be subjected to field trials on a working plant.

Walkersele® production

We have suites of state-of-the-art static and dynamic test rigs that can simulate the operational parameters of virtually every type and complexity of fluid sealing system that we create.

These are used extensively during the development of new products, and also to ensure that optimum performance is maintained for production items. Our testing facilities include:

• Hydraulic seal testing to 42MPa at linear velocities to 0.5m/s. • Gasket testing to 20MPa with helium. Full test reports are prepared for each customer • Climatic chamber for static testing of seals to 160MPa at temperatures from -70°C to +180°C. • RGD (rapid gas decompression) testing to 60MPa and 200°C Successes on high-profile development projects for our custom with multiple heat/pressurisation/soak/rapid decompression designed seals produce very positive feedback. The resulting cycles. improvements in seal performance — in terms of sealing integrity, operational life, and the ability to work under extreme conditions — are greatly appreciated by our customers on a worldwide basis.

Rotary seal test rigs with data capture

20 To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz Typical applications

Walkersele® success Walkersele® success Hydropower turbine Propulsion shafts Turbine shaft seals on an EDF hydroelectric scheme at All M-Class frigates of the Dutch Royal Navy now Villeneuve, France, have been converted to Walkersele® have Walkerseles installed on their propulsion using James Walker’s patented OSJ® On-Site Joining shafts, following a technical review of the support technique. bearing seals. Three Walkersele® D7 seals running on a tungsten carbide coated shaft sleeve were fitted in less than three hours.

The arrangement is based on two Walkersele® lip The original sealing system on the 13MW bulb type seals with James Walker’s OSJ® (On-Site Joining) turbine proved difficult to keep in good condition technique, plus an automatic lubricant dispenser and in the highly abrasive and corrosive river flow. The new bearing cover. It replaces a labyrinth system that Walkerseles last significantly longer, seal more scored the propulsion shaft. efficiently and are far easier to maintain.

Walkersele® success Walkersele® success Tidal power Wind turbines The world’s first commercially-viable tidal turbine Wind power operates in Northern Ireland — with rotor blade technology bearings protected by Walkersele® radial lip seals. company NEG Micon The prototype of Denmark uses SeaGen turbine 1800mm was installed in diameter Walkerseles Strangford Lough to protect the slew ring in May 2008 and mechanism that keeps supplies power to the head of its 900kW Northern Ireland turbines facing into Electricity. wind. Each of the A special Walkersele® turbine’s dual 16m was custom designed diameter rotors has and moulded with an two Walkerseles extra dust lip for this fitted back-to-back application. to prevent sea water Photo by courtesy of Dr I J Stevenson. entering the main bearings and lubricant escaping.

To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz 21 Walkersele® OSJ-2 for On-Site Joining

Improved design

In consultation with long-term OSJ® customers, we have been constantly improving the installation kit to make it easier and more efficient to use under arduous maintenance conditions.

The latest improvements include: • New 'twin-peg' location of joined ends for easier handling, more accurate location and stronger hold. • Redesigned jig to provide a more positive location of the seal joint. • Improved temperature indicator.

Walkersele® OSJ is our highly successful technique for the On-Site Joining of split-type Walkerseles. Its many benefits include: Fitting procedure • High performance — installed units provide the sealing performance of high-integrity endless Walkerseles. Stage 1: Apply epoxy • Worldwide proven — on marine propulsion systems, adhesive to joining faces of gearboxes, power stations, sugar refineries, etc. Walkersele® OSJ-2. • Cost effective maintenance — the performance and integrity of an endless-type seal is achieved:  without major plant strip-down  without expensive on-site vulcanising.

® Stage 2: Align join in Walkersele OSJ — background to moulded jig. success

Innumerable improvements in Walkersele® materials and design have been introduced over the past 60 years.

One of these was the split-type seal that proved invaluable where gland and shaft assemblies had to be dismantled to fit a moulded endless seal. This development drastically cut the Stage 3: Clamp into costs of plant downtime and maintenance man-hours. position with steel band. However, normal split seals are not penalty-free, as sealing performance can be affected when shaft dynamics are severe, or when oil levels reach the seal split. Abutting the ends is still a viable option if a small degree of leakage is acceptable.

On-site vulcanising was, for many years, the only answer to split seal assemblies where leakage was unacceptable. But this process could prove expensive, as it needed a high degree Stage 4: Cure epoxy of skill and elaborate jigs. So, we developed Walkersele OSJ. adhesive with hot air gun.

Since the introduction of Walkersele OSJ in 1991, rotary lip seal replacement has come full circle, to form a full circle again. After a few hours’ hands-on training, a maintenance fitter is able to produce a securely bonded join that provides Walkersele with the integrity of a fully moulded endless seal. Fitting procedure is straightforward, as shown alongside.

22 To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz Walkersele® OSJ-2

OSJ-2 On-Site Joining kit Seal availability Product : Date : Drawn by : Sketch reference : Product : Date : Drawn by : Sketch reference : JAMES WALKER S.P.S. Ltd. Walkersele 9th March 2012 Ian Harland Page 21 - Issue 44, P13 Product : Date : Drawn by : Sketch reference : JAMES WALKER S.P.S. Ltd. WalkerseleJAMES WALKER3rd March 2012 S.P.S.Ian Ltd. Harland PageWalkersele 21 - Issue 44, P13 9th March 2012 Ian Harland Page 21 - Issue 44, P13 Marcoms Department MarcomsWalkersele Department D1 lip profile ; Seal only MarcomsWalkersele Department D1 DL lip profile ; Seal only Walkersele D5 lip profile ; Seal only Profiles WalkerseleD1 Lip design OSJ-2 is D1supplied DL Lip designin all WalkerseleD5 Lip designs design that Rubber proofed fabric Rubberbacked Walkersele's proofed fabric backedRubber Walkersele'sproofed fabric backed Walkersele's incorporate seal backs moulded in rubberised fabric, including: All appropriate materialsAll appropriate materialsAll appropriate materials

Product : Date : Drawn by : SketchProduct reference : : Date : Drawn by : Sketch reference : Walkersele 3rd March 2012 Ian Harland Page 21 - Issue 44, P13 JAMES WALKER S.P.S. Ltd. Walkersele 10th March 2012 Ian Harland Page 21 - Issue 44, P13 Product : Date : Drawn by : JAMESSketch reference : WALKER S.P.S. Ltd. Walkersele 9th March 2012 Ian Harland JAMES WALKER S.P.S. Ltd. Marcoms Department Page 21 - MarcomsIssue 44,Walkersele P13 Department D6 DL lip profile ; Seal only Walkersele D7 lip profile ; Seal only Marcoms Department Walkersele D6 lip profile ; Seal only

D6 Lip design D6 DL Lip design D7 Lip design Rubber proofed fabric backed Walkersele's Rubber proofed fabricD1 backed Walkersele'sD1/DLRubber proofed fabricD5 backed Walkersele's All appropriate materialsAll appropriate materialsAll appropriate materials

Product : Date : Drawn by : Sketch reference : JAMES WALKER S.P.S. Ltd. Walkersele 10th March 2012 Ian Harland Page 21 - Issue 44, P13 Marcoms Department Walkersele D8 lip profile ; Seal only

D8 Lip design Rubber proofed fabric backed Walkersele's D6 D6/DL D7 All appropriate materials

Kit components • Walkersele ® — specially adapted at join interface for OSJ® installation. • Steel clamping band. • Nut driver to adjust clamping band. • Joining jig — precision moulded in synthetic elastomer. D8 • Two-part epoxy adhesive in sachet (adhesive cures to semi-rigid state). In addition. some TBMS (tunnel boring machine seal) profiles • Adhesive applicator brush. may be suitable for On-Site Joining. • Degreasing cloth. • Abrasive stick. • Emery paper with self-adhesive backing. Materials • Temperature indicator with self-adhesive backing Walkersele OSJ-2 is supplied in the following elastomers: nitrile (Note: hot air gun is needed to effect adhesive cure). (NBR), fluorocarbon (FKM) and hydrogenated nitrile (HNBR), • Step-by-step instructions. all where the Walkersele material has a rubberised fabric back. Temperature limits These are dependent on the seal material. But please note that Training the bonding technique imposes an upper limit of 150°C (302°F) on the seal. Successful application of the Walkersele® OSJ technique relies on careful adherence to all stages of the joining process — as Sizes laid down in the full instructions supplied with each kit. Walkersele OSJ-2 is supplied with twin-peg location for shaft sizes from 60mm to 1000mm OD. We also have On-Site Joining We recommend that first-time users attend one of our hands-on techniques for seals outside this range (eg, offshore wind training sessions. These can be carried out at your premises or turbines), and for applications where space is limited — one of our sites. please contact our Technical Support Team for advice.

For details, please contact our Technical Support Team or your Performance envelope local James Walker distributor. If you need further guidance or performance data concerning a specific application, please discuss exact details of media compatibility, pressure, temperature and surface speeds with our Technical Support Team.

23 To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz 23 Special arrangements for worn shafts

We offer a package of solutions to the problem of shaft wear Walkersele® Cartridge availability created beneath the lip position when standard radial lip seals Supplied as complete customised package following an on-site have run under arduous conditions for long periods. assessment of your application. Installation and refurbishment services are also available. Please contact our Technical Support Team. Walkersele® Cartridges

• One or more Walkerseles housed in a custom-designed cartridge allows the seal lip to be located away from areas of Spacer rings shaft wear. These allow a Walkersele®, or combination of seals, to be • A split-type cartridge that simply bolts onto the existing relocated within a housing so that the lip/s bear on a different equipment face will extend the life of the equipment without area of shaft surface. the need for major strip-down, shaft reconditioning or replacement. When fitted in new equipment, a spacer ring allows sealing lip positions to be readily altered when shaft wear has occurred • Walkersele® cartridges are also custom designed to overcome after a long period of operation. When retrofitting to an existing other problems, including bearing protection for pumps application, it may be necessary to modify the housing and handing highly abrasive media, eccentric shaft action, and long- retaining plate to accommodate the spacer ring/s.

Product range : Date : Sketch reference : JAMESterm WALKER sealing S.P.S. Ltd. with minimisedWalkesele ; Rotary Seals Leaflet downtime15-03-2012 Page 22 - Issue 44for - P13 seal refurbishment. Marcoms Department M1 D7 Housed with single spacer ring With two (or more) Walkersele D7 seals in a housing, spacer M1 D7 Housed with single spacer ring Single seal & spacer rings must be installed between the seals to support the heel Spacer ring enables of the seal. This applies equally to seals in series — facing in or the Walkersele lip to facing out — and in back-to-back formation. be repositioned to avoid shaft wear or Spacer ring availability damage. This cartridge Rings are supplied to order to suit specific Walkersele/housing arrangement shows configurations. They are available in various materials, with common bolting for seal nylon or stainless steel proving most popular. Please contact and cartridge. Separate our Technical Support Team for recommendations. bolting is available. Product range : Date : Sketch reference : JAMES WALKER S.P.S. Ltd. Walkesele ; Rotary Seals Leaflet 15-03-2012 Page 22 - Issue 44, P13 Marcoms Department M1 D7 Back to back with lantern ring and 2 x spacer rings Walkersele® Shaft Sleeves Double seal arrangements Our sleeves will protect your shaft from wear and present the These use two optimum running surface for Walkersele® radial lip seals. We Walkerseles in a can provide them in either endless or split form. cartridge, along with various The sleeves are precision spacers and/or manufactured in corrosion-resistant different widths of steel or non-ferrous alloys, to suit lantern ring. By the operating conditions, and can varying the sizes be supplied with hard surface and positions of these components, the sealing elements are layers when required. Product range : Date : Sketch reference : JAMES WALKERaccurately S.P.S. Ltd. positionedWalkesele to; Rotary run Seals Leaflet on specific15-03-2012 areasPage 22 - Issue 44 - P13of the shaft. Marcoms Department D7 Floating Cartridge Arrangement Our split-type sleeves feature a Special Double D7 Lip Seal and Standard Lantern Ring taper-wedge location and locking Floating Cartridge Arrangement Floating cartridge system that ensures perfect This arrangement alignment of the split halves. allows the sealing elements to follow the Shaft sleeve availability eccentric movement Custom-designed and of worn or misaligned manufactured to suit each specific shafts. It is usually application. Please contact our applied to large Technical Support Team. diameter shafts that rotate slowly.

24 To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz Special features

Our list of Walkersele® special features grows constantly as we Walkersele® SpringCover introduce new developments to improve the efficiency of our products under specific operating conditions. Here are a few Walkersele® lip-energising springs are supplied as standard in examples. stainless steel, with other materials such as Inconel® available to order. Walkersele® SpringSafe However, when the seals must operate under extremely corrosive conditions — such as highly oxygenated marine environments — it may be necessary to provide additional protection for the spring by means of Walkersele® SpringCover.

With Walkersele SpringCover, we encase the spring in polyolefin then flush and vacuum fill the inside of the spring with corrosion inhibitor. This combination prevents external fluids from attacking the spring and greatly reduces the possibility of corrosion occurring within the coils.

Walkersele® with Dust Lip

Our specially developed SpringSafe technique: Special versions of our D6 and D1 designs have an auxiliary • Provides positive spring retention for Walkersele® D6, D7 and ‘dust lip’ incorporated to prevent the ingress of liquid or solid D8 radial lip seals. contaminants in aggressive industrial environments. Dust lip • Intimately cures the lip-energising spring into the spring (DL) versions are often installed when there is insufficient space groove to keep the spring securely in position during to fit two standard seals in a housing – but please note that a installation and operation. dust lip will not seal as efficiently as a separate lip seal. • Allows spring coils to move freely for efficient lip seal operation. Special features With SpringSafe, plant operators enjoy peace-of-mind that the • Prevents ingress of external contaminants. lip-energising springs on their endless-type seals are properly • Needs a smaller housing than double seal (back-to-back) located at installation and cannot readily be dislodged to create arrangements often used for two-way sealing. secondary damage when a shaft or bearing runs beyond • Fabric-backed versions can be supplied as split types, and Product : Date : Drawn by : Sketch reference : Product : Date : Drawn by : Sketch reference : Walkersele® 3rd March 2012 Ian Harland Page 23 - Issue 44, P13 recommended operating limits. JAMES WALKER S.P.S. Ltd.as WalkerseleJAMES WALKER OSJ-2 S.P.S.(pages Ltd. 22 - 23) forWalkersele On-Site 3rdJoining. March 2012 Ian Harland Page 23 - Issue 44, P13 Marcoms Department MarcomsWalkersele Department D6 DL lip profile ; Seal only Walkersele D1 DL lip profile ; Seal only SpringSafe is particularly beneficial on sealing duties where DL availability unprotected springs are subjected to the corrosive or abrasive ExistingD6 DL tools Lip — designwe hold manyD1 tools DL for LipD6/DL design and D1/DL. media found in metallurgical processing, marine applications, Please contact us to check tool availability. Where we have a pulp and paper processing, and petrochemical processing.Rubber proofedsuitable fabric tool,Rubber your backed seal proofedwill beWalkersele's supplied fabric on short backed delivery timeWalkersele's without tooling charges. Walkersele SpringSafe materials All appropriate materialsAll appropriate materials SpringSafe is currently available for Walkerseles that are precision moulded in: • Nitrile (NBR) elastomer — ie, materials M1 and M6 (page 12). • Hydrogenated nitriles (HNBR) — including our reformulated HNBR grades (pages 13 - 14).

Walkersele SpringSafe sizes Shafts of 250mm (9.8 inch) to 600mm (23.6 inch) diameter can be supplied with Walkersele radial lip seals incorporating the SpringSafe method of positive retention – however, the seal section must be 14.4mm (0.57 inch) or greater for efficient operation. D6/DL D1/DL

For SpringSafe on smaller diameter shafts and non-standard New tools — are swiftly made in-house when the size you sizes, please refer to our Technical Support Team. We are need does not exist. In these cases a tooling charge will be constantly developing and proving extensions to our Walkersele applied. family, so we may well be able to meet your request.

To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz 25 Special features

Product : Date : Drawn by : Sketch reference : JAMES WALKER S.P.S. Ltd. Walkersele 9th March 2012 Ian Harland Page 24 - Issue 44, P13 Marcoms Department Walkersele D6 lip profile ; Seal only

Product : Date : Drawn by : Sketch reference : D6 Shallowback Lip design JAMES WALKER S.P.S. Ltd. Walkersele 19th March 2012 Ian Harland Page 24 - Issue 44, P13 Walkersele® Shallowback designsMarcoms DepartmentWalkerseleWalkersele® Long D6 Long Lip Lip profile ; Seal only Rubber proofed fabric backed Walkersele's These modified versions of Walkersele® D6 and D7 designs ThisD6 modifiedLong Lip version design of our D6 design incorporates a long lip All appropriatehave reduced depth materials at the back, plus flexible, extended lips. for sealing applications that involve slow rotary shafts suffering Rubber proofeda high fabricdegree ofbacked eccentricity, Walkersele's or where clearances between the Allshaft appropriate and housing materialsare excessive.

Walkersele® Long Lip availability Existing tools — we hold a Walkersele® D6 Shallowback limited number of tools for this design. Please contact us to check availability. Where we have a suitable tool, your seal will be supplied on short delivery time without tooling charges. Special features • Suitable for duties where housing depth limitations preclude the use of standard Walkerseles. New tools — are swiftly made in-house when the size you • Can be moulded with the extended lip and standard back for need does not exist. In these cases a tooling charge will be duties where shaft eccentricity is high (Please consult our applied. Technical Support Team). • Shallowback with the extended lip is available for use with angular shaft displacement on spherical bearings/couplings. Walkersele® with Ports & Grooves • D7 Shallowback is used as a wiper (eg, on automatic gauge control units) where it prevent the ingress of foreign matter. There are many sealing arrangements where two seals are

fitted back-to-back in the same housing — eg, rolling mill D6 & D7 Shallowback availability bearings — and it is possible that one or both will run dry Existing tools — we hold a limited number of tools for these unless lubricant is supplied from an external source. designs. Please contact us to check mould availability. Where we have a suitable tool, your seal will be supplied on short While it is preferable that lubrication is conducted through a delivery time without tooling charges. lantern ring located between the Walkerseles, this can also be accomplished by introducing a lubricant flow through the New tools — are swiftly made in-house when the size you housing to the junction of the two seals. Using Walkerseles that need does not exist. In these cases a tooling charge will be are specially manufactured with an annular groove and radial applied. ports in their backs allows the lubricant to distribute to the lips of both seals.

Walkersele® with Ports and Grooves

Alternative methods are to machine an annular groove in the housing and use Walkerseles that are manufactured with radial ports, or to install a lantern ring between the seals — albeit this may increase the depth of housing required.

Annular grooves can be provided in Walkerseles of 12.5mm (0.5 inch) section width or greater. Axial ports can be provided on any size of Walkersele.

26 To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz Special features

Endless-type Walkerseles Split-type Walkerseles

Walkerseles with a flexible back of elastomer-proofed fabric All Walkerseles are available in endless form, as a complete (excluding D7 and D8 designs) can be provided as split-types ring. However, self-retaining types (eg, M6 and M8 materials) for ease of installation. These include M1, M5, M9, and for use in open housings are supplied only in endless form as Elast-O-Lion® material types. Aflas® grades can also be they have a flexible metal band encapsulated in the back. supplied split, but their special benefits with abrasive or chemically aggressive media may be compromised.

A split-type Walkersele is manufactured with a solid elastomer insert where the split is formed. This gives a rubber-to-rubber mating face in the seal’s body for close and accurate abutment when the seal is in position. Installation is simple, as the seal is easily opened out around the shaft, the ends mated, and the toroidal lip-energising spring screwed together.

The main benefit of endless seals is their high integrity sealing capability. But this is often mitigated by the maintenance downtime required for their installation, especially on shaft bearings where the shaft may need to be removed for access.

Hence the development of split-type seals and our Walkersele OSJ-2 On-Site Joining technique (pages 22 - 23).

However, the sealing performance of split type seals can be affected when shaft dynamics are severe, or the oil level is above the centre line of the shaft. Thus a small degree of leakage past the abutted ends is always possible.

Our Walkersele OSJ-2 On-Site Joining technique overcomes these problems (pages 22 - 23).

Walkersele® with Ports and Grooves

To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz 27 MainWalkersele Page ®or M1/D6 Subject standard Heading range

Walkersele® M1/D6 JW Chart 56: Walkersele® M1/D6 — inch sizes JW Charts 56 and 57, as shown on these two pages, contain our standard ranges of Walkersele® M1/D6 seals for use in Shaft Housing Housing JW Chart JW JW housings with retaining plates. Dia Dia Depth Part number Part number A B C number ENDLESS SPLIT Chart 56 covers inch size seals. • 1 1⁷⁄₈ ³⁄₈ 56-100 WG000259 WG010254 • Chart 57 covers metric sizes. 1¹⁄₈ 2 ³⁄₈ 56-112 WG000283 WG010289 1¹⁄₄ 2¹⁄₈ ³⁄₈ 56-125 WG000313 WG010319 All these seals are available ex-stock. 1³⁄₈ 2¹⁄₄ ³⁄₈ 56-137 WG000348 WG010343 ¹⁄₂ ¹⁄₂ ⁷⁄₁₆ When ordering, please quote the appropriate JW Part number, 1 2 56-150 WG000380 WG010386 1⁵⁄₈ 2⁵⁄₈ ⁷⁄₁₆ 56-162 WG000410 WG010416 which differentiatesWalkersele betweenM1 D6 ; JWendless-type Charts 56 and and split-type 57 seals. 1³⁄₄ 2³⁄₄ ⁷⁄₁₆ 56-175 WG000445 WG010440 Retained seal housing dimensional nomenclature 1⁷⁄₈ 2⁷⁄₈ ⁷⁄₁₆ 56-187 WG00047X WG010475 2 3 ⁷⁄₁₆ 56-200 WG00050X WG010505 2¹⁄₈ 3¹⁄₈ ⁷⁄₁₆ 56-212 WG000534 WG01053X 2¹⁄₄ 3¹⁄₄ ⁷⁄₁₆ 56-225 WG000577 WG010572 2³⁄₈ 3³⁄₈ ⁷⁄₁₆ 56-237 WG000607 WG010602 Shaft 2¹⁄₂ 3¹⁄₂ ⁷⁄₁₆ 56-250 WG000631 WG010637 chamfer 2³⁄₄ 4 ¹⁄₂ 56-275 WG000690 WG010696 3 4¹⁄₄ ¹⁄₂ 56-300 WG000763 WG010769 3¹⁄₄ 4¹⁄₂ ¹⁄₂ 56-325 WG000828 WG010823 3¹⁄₂ 4³⁄₄ ¹⁄₂ 56-350 WG000887 WG010882 3³⁄₄ 5 ¹⁄₂ 56-375 WG00095X WG010955 Shaft Housing 4 5¹⁄₄ ¹⁄₂ 56-400 WG001018 WG011013 Ø ; A Ø ; B 4¹⁄₄ 5³⁄₄ ⁵⁄₈ 56-425 WG001077 WG011072 4¹⁄₂ 6 ⁵⁄₈ 56-450 WG00114X WG011145 4³⁄₄ 6¹⁄₄ ⁵⁄₈ 56-475 WG001204 WG01120X 5 6¹⁄₂ ⁵⁄₈ 56-500 WG001271 WG011277 5¹⁄₄ 6³⁄₄ ⁵⁄₈ 56-525 WG001336 WG011331 5¹⁄₂ 7 ⁵⁄₈ 56-550 WG001395 WG011390 Housing 5³⁄₄ 7¹⁄₄ ⁵⁄₈ 56-575 WG001468 WG011463 chamfer 6 7¹⁄₂ ⁵⁄₈ 56-600 WG001522 WG011528 6¹⁄₄ 7³⁄₄ ⁵⁄₈ 56-625 WG001581 WG011587 6¹⁄₂ 8 ⁵⁄₈ 56-650 WG001654 WG01165X 6³⁄₄ 8¹⁄₄ ⁵⁄₈ 56-675 WG001719 WG011714 Housing depth ; C 7 8¹⁄₂ ⁵⁄₈ 56-700 WG001778 WG011773 7¹⁄₂ 9 ⁵⁄₈ 56-750 WG001905 WG011900 8 9¹⁄₂ ⁵⁄₈ 56-800 WG002030 WG012036 8¹⁄₂ 10 ⁵⁄₈ 56-850 WG002154 WG01215X 9 10¹⁄₂ ⁵⁄₈ 56-900 WG002286 WG012281 9¹⁄₂ 11 ⁵⁄₈ 56-950 WG002413 WG012419 10 11¹⁄₂ ⁵⁄₈ 56-1000 WG002545 WG012540 10¹⁄₂ 12¹⁄₄ ³⁄₄ 56-1050 WG002669 WG012664 11 12³⁄₄ ³⁄₄ 56-1100 WG002790 WG012796 11¹⁄₂ 13¹⁄₄ ³⁄₄ 56-1150 WG002928 WG012923 12 13³⁄₄ ³⁄₄ 56-1200 WG003045 WG013040 13 14³⁄₄ ³⁄₄ 56-1300 WG003304 WG01330X 14 15³⁄₄ ³⁄₄ 56-1400 WG00355X WG013555 15 16³⁄₄ ³⁄₄ 56-1500 WG003819 WG013814 All dimensions in inches

28 To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz Walkersele® M1/D6 standard range

JW Chart 57: JW Chart 57: Walkersele® M1/D6 — metric sizes Walkersele® M1/D6 — metric sizes (continued)

Shaft Housing Housing JW Chart JW JW Shaft Housing Housing JW JW Shaft Housing Housing JW JW Dia Dia Depth Part number Part number JW Chart JW Chart number Dia Dia Depth Part number Part number Dia Dia Depth Part number Part number A B C ENDLESS SPLIT A B C number ENDLESS SPLIT A B C number ENDLESS SPLIT 1 1⁷⁄₈ ³⁄₈ 56-100 WG000259 WG010254 25 47 10 57-25 WG02025X WG030255 225 265 16 57-225 WG022252 WG032258 1¹⁄₈ 2 ³⁄₈ 56-112 WG000283 WG010289 30 52 10 57-30 WG020306 WG030301 230 270 16 57-230 WG022309 WG032304 1¹⁄₄ 2¹⁄₈ ³⁄₈ 56-125 WG000313 WG010319 32 54 10 57-32 WG020322 WG030328 235 275 16 57-235 WG02235X WG032355 1³⁄₈ 2¹⁄₄ ³⁄₈ 56-137 WG000348 WG010343 35 57 10 57-35 WG020357 WG030352 240 280 16 57-240 WG022406 WG032401 245 285 16 57-245 WG022457 WG032452 1¹⁄₂ 2¹⁄₂ ⁷⁄₁₆ 56-150 WG000380 WG010386 38 63 11 57-38 WG020381 WG030387 250 290 16 57-250 WG022503 WG032509 ⁵⁄₈ ⁵⁄₈ ⁷⁄₁₆ 56-162 WG000410 WG010416 40 65 11 57-40 WG020403 WG030409 1 2 255 299 20 57-255 WG022554 WG03255X 42 67 11 57-42 WG02042X WG030425 1³⁄₄ 2³⁄₄ ⁷⁄₁₆ 56-175 WG000445 WG010440 260 304 20 57-260 WG022600 WG032606 43 68 11 57-43 WG020438 WG030433 1⁷⁄₈ 2⁷⁄₈ ⁷⁄₁₆ 56-187 WG00047X WG010475 265 309 20 57-265 WG022651 WG032657 45 70 11 57-45 WG020454 WG03045X 2 3 ⁷⁄₁₆ 56-200 WG00050X WG010505 270 314 20 57-270 WG022708 WG032703 50 75 11 57-50 WG020500 WG030506 2¹⁄₈ 3¹⁄₈ ⁷⁄₁₆ 56-212 WG000534 WG01053X 275 319 20 57-275 WG022759 WG032754 53 78 11 57-53 WG020535 WG030530 2¹⁄₄ 3¹⁄₄ ⁷⁄₁₆ 56-225 WG000577 WG010572 280 324 20 57-280 WG022805 WG032800 55 80 11 57-55 WG020551 WG030557 285 329 20 57-285 WG022856 WG032851 2³⁄₈ 3³⁄₈ ⁷⁄₁₆ 56-237 WG000607 WG010602 58 83 11 57-58 WG020586 WG030581 290 334 20 57-290 WG022902 WG032908 ¹⁄₂ ¹⁄₂ ⁷⁄₁₆ 56-250 WG000631 WG010637 2 3 60 85 11 57-60 WG020608 WG030603 295 339 20 57-295 WG022953 WG032959 2³⁄₄ 4 ¹⁄₂ 56-275 WG000690 WG010696 65 90 11 57-65 WG020659 WG030654 296 340 20 57-296 WG022961 WG032967 3 4¹⁄₄ ¹⁄₂ 56-300 WG000763 WG010769 68 100 12.5 57-68 WG020683 WG030689 300 344 20 57-300 WG023003 WG033009 3¹⁄₄ 4¹⁄₂ ¹⁄₂ 56-325 WG000828 WG010823 70 102 12.5 57-70 WG020705 WG030700 305 349 20 57-305 WG023054 WG03305X 3¹⁄₂ 4³⁄₄ ¹⁄₂ 56-350 WG000887 WG010882 73 105 12.5 57-73 WG02073X WG030735 310 354 20 57-310 WG023100 WG033106 3³⁄₄ 5 ¹⁄₂ 56-375 WG00095X WG010955 75 107 12.5 57-75 WG020756 WG030751 320 364 20 57-320 WG023208 WG033203 325 369 20 57-325 WG023259 WG033254 4 5¹⁄₄ ¹⁄₂ 56-400 WG001018 WG011013 80 112 12.5 57-80 WG020802 WG030808 330 374 20 57-330 WG023305 WG033300 ¹⁄₄ ³⁄₄ ⁵⁄₈ 56-425 WG001077 WG011072 82 114 12.5 57-82 WG020829 WG030824 4 5 340 384 20 57-340 WG023402 WG033408 85 117 12.5 57-85 WG020853 WG030859 4¹⁄₂ 6 ⁵⁄₈ 56-450 WG00114X WG011145 350 394 20 57-350 WG02350X WG033505 88 120 12.5 57-88 WG020888 WG030883 4³⁄₄ 6¹⁄₄ ⁵⁄₈ 56-475 WG001204 WG01120X 360 404 20 57-360 WG023607 WG033602 90 122 12.5 57-90 WG02090X WG030905 5 6¹⁄₂ ⁵⁄₈ 56-500 WG001271 WG011277 370 414 20 57-370 WG023704 WG03370X 93 125 12.5 57-93 WG020934 WG03093X 5¹⁄₄ 6³⁄₄ ⁵⁄₈ 56-525 WG001336 WG011331 380 424 20 57-380 WG023801 WG033807 95 127 12.5 57-95 WG020950 WG030956 5¹⁄₂ 7 ⁵⁄₈ 56-550 WG001395 WG011390 390 434 20 57-390 WG023909 WG033904 97 129 12.5 57-97 WG020977 WG030972 400 444 20 57-400 WG02400X WG034005 5³⁄₄ 7¹⁄₄ ⁵⁄₈ 56-575 WG001468 WG011463 100 132 12.5 57-100 WG021000 WG031006 413 463 22 57-413 WG024131 WG034137 6 ¹⁄₂ ⁵⁄₈ 56-600 WG001522 WG011528 7 105 145 16 57-105 WG021051 WG031057 420 470 22 57-420 WG024204 WG03420X 6¹⁄₄ 7³⁄₄ ⁵⁄₈ 56-625 WG001581 WG011587 110 150 16 57-110 WG021108 WG031103 430 480 22 57-430 WG024301 WG034307 6¹⁄₂ 8 ⁵⁄₈ 56-650 WG001654 WG01165X 115 155 16 57-115 WG021159 WG031154 440 490 22 57-440 WG024409 WG034404 6³⁄₄ 8¹⁄₄ ⁵⁄₈ 56-675 WG001719 WG011714 120 160 16 57-120 WG021205 WG031200 450 500 22 57-450 WG024506 WG034501 7 8¹⁄₂ ⁵⁄₈ 56-700 WG001778 WG011773 125 165 16 57-125 WG021256 WG031251 455 505 22 57-455 WG024557 WG034552 7¹⁄₂ 9 ⁵⁄₈ 56-750 WG001905 WG011900 130 170 16 57-130 WG021302 WG031308 460 510 22 57-460 WG024603 WG034609 475 525 22 57-475 WG024751 WG034757 8 9¹⁄₂ ⁵⁄₈ 56-800 WG002030 WG012036 135 175 16 57-135 WG021353 WG031359 480 530 22 57-480 WG024808 WG034803 ¹⁄₂ 10 ⁵⁄₈ 56-850 WG002154 WG01215X 140 180 16 57-140 WG02140X WG031405 8 485 535 22 57-485 WG024859 WG034854 145 185 16 57-145 WG021450 WG031456 9 10¹⁄₂ ⁵⁄₈ 56-900 WG002286 WG012281 500 550 22 57-500 WG025006 WG035001 150 190 16 57-150 WG021507 WG031502 9¹⁄₂ 11 ⁵⁄₈ 56-950 WG002413 WG012419 530 580 22 57-530 WG025308 WG035303 155 195 16 57-155 WG021558 WG031553 10 11¹⁄₂ ⁵⁄₈ 56-1000 WG002545 WG012540 540 590 22 57-540 WG025405 WG035400 160 200 16 57-160 WG021604 WG03160X 10¹⁄₂ 12¹⁄₄ ³⁄₄ 56-1050 WG002669 WG012664 560 610 22 57-560 WG02560X WG035605 165 205 16 57-165 WG021655 WG031650 11 12³⁄₄ ³⁄₄ 56-1100 WG002790 WG012796 580 630 22 57-580 WG025804 WG03580X 166 206 16 57-166 WG021663 WG031669 600 650 22 57-600 WG026002 WG036008 11¹⁄₂ 13¹⁄₄ ³⁄₄ 56-1150 WG002928 WG012923 170 210 16 57-170 WG021701 WG031707 650 714 25 57-650 WG026509 WG036504 12 ³⁄₄ ³⁄₄ 56-1200 WG003045 WG013040 13 175 215 16 57-175 WG021752 WG031758 660 724 25 57-660 WG026606 WG036601 13 14³⁄₄ ³⁄₄ 56-1300 WG003304 WG01330X 180 220 16 57-180 WG021809 WG031804 700 764 25 57-700 WG027009 WG037004 14 15³⁄₄ ³⁄₄ 56-1400 WG00355X WG013555 185 225 16 57-185 WG02185X WG031855 750 814 25 57-750 WG027505 WG037500 15 16³⁄₄ ³⁄₄ 56-1500 WG003819 WG013814 190 230 16 57-190 WG021906 WG031901 790 854 25 57-790 WG027904 WG03790X 195 235 16 57-195 WG021957 WG031952 800 864 25 57-800 WG028005 WG038000 200 240 16 57-200 WG022007 WG032002 820 884 25 57-820 WG02820X WG038205 205 245 16 57-205 WG022058 WG032053 830 894 25 57-830 WG028307 WG038302 970 1034 25 57-970 WG029702 WG039708 210 250 16 57-210 WG022104 WG03210X 1000 1064 25 57-1000 WG029990 WG039996 215 255 16 57-215 WG022155 WG032150 220 260 16 57-220 WG022201 WG032207 All dimensions in mm

To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz 29 Walkersele® M6/D6 standard range

Walkersele® M6/D6 JW Chart 104 Walkersele® M6/D6 — inch sizes JW Charts 104, 105 and 376, as shown on the following three pages, contain our standard ranges of self-retaining Shaft Housing Housing Walkersele® M6/D6 seals for use with open housings. JW Chart JW Dia Dia Depth A B C number Part number • Chart 104 covers inch size seals. 2 3 ⁷⁄₁₆ 104-200 WG050507 • Chart 105 covers metric sizes. ¹⁄₈ ¹⁄₈ ⁷⁄₁₆ • Chart 376 covers seals conforming to the widely used 2 3 104-212 WG05054X DIN3760 and the equivalent (BS) ISO 6194 standard, 2¹⁄₄ 3¹⁄₄ ⁷⁄₁₆ 104-225 WG050574 as previously covered by BS 1399. 2³⁄₈ 3³⁄₈ ⁷⁄₁₆ 104-237 WG050604 2¹⁄₂ 3¹⁄₂ ⁷⁄₁₆ 104-250 WG050639 Product : Date : Drawn by : Sketch reference : ³⁄₄ ¹⁄₂ JAMESAll WALKER these S.P.S.seals Ltd are availableRotary seals ex-stock.3rd March 2012 Ian Harland Page 28 - Issue 44, P13 2 4 104-275 WG050701 Marcoms Department Description : Walkersele's M6 D6 Charts 104, 105 and 376 housing dimensional nomenclature 3 4¹⁄₄ ¹⁄₂ 104-300 WG050760 When ordering, please quote the appropriate JW Part number. 3¹⁄₄ 4¹⁄₂ ¹⁄₂ 104-325 WG050833 As these seals are self-retaining they are supplied only as 3¹⁄₂ 4³⁄₄ ¹⁄₂ 104-350 WG050892 endlessWalkersele's types. M6 D6 ; Charts 104, 105 and 376 3³⁄₄ 5 ¹⁄₂ 104-375 WG050957 Self-retaining seal housing dimensional nomenclature 4 5¹⁄₄ ¹⁄₂ 104-400 WG051015 4¹⁄₄ 5³⁄₄ ⁵⁄₈ 104-425 WG051074 4¹⁄₂ 6 ⁵⁄₈ 104-450 WG051147 4³⁄₄ 6¹⁄₄ ⁵⁄₈ 104-475 WG051201 5 6¹⁄₂ ⁵⁄₈ 104-500 WG051279 Shaft 5¹⁄₄ 6³⁄₄ ⁵⁄₈ 104-525 WG051333 chamfer 5¹⁄₂ 7 ⁵⁄₈ 104-550 WG051392 5³⁄₄ 7¹⁄₄ ⁵⁄₈ 104-575 WG051465 6 7¹⁄₂ ⁵⁄₈ 104-600 WG05152X 6¹⁄₄ 7³⁄₄ ⁵⁄₈ 104-625 WG051589 6¹⁄₂ 8 ⁵⁄₈ 104-650 WG051651 Shaft Housing 6³⁄₄ 8¹⁄₄ ⁵⁄₈ 104-675 WG051716 Ø ; A Ø ; B 7 8¹⁄₂ ⁵⁄₈ 104-700 WG051775 7¹⁄₂ 9 ⁵⁄₈ 104-750 WG051902 8 9¹⁄₂ ⁵⁄₈ 104-800 WG052038 8¹⁄₂ 10 ⁵⁄₈ 104-850 WG05216X 9 10¹⁄₂ ⁵⁄₈ 104-900 WG052283 9¹⁄₂ 11 ⁵⁄₈ 104-950 WG052410 Housing 10 11¹⁄₂ ⁵⁄₈ 104-1000 WG052542 chamfer 10¹⁄₂ 12¹⁄₄ ³⁄₄ 104-1050 WG052666 11 12³⁄₄ ³⁄₄ 104-1100 WG052798 11¹⁄₂ 13¹⁄₄ ³⁄₄ 104-1150 WG052925 12 13³⁄₄ ³⁄₄ 104-1200 WG053042 Housing depth ; C 13 14³⁄₄ ³⁄₄ 104-1300 WG053301 14 15³⁄₄ ³⁄₄ 104-1400 WG053557 15 16³⁄₄ ³⁄₄ 104-1500 WG053816 All dimensions in inches

30 To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz Walkersele® M6/D6 standard range

JW Chart 104 JW Chart 105 JW Chart 105 Walkersele® M6/D6 — inch sizes Walkersele® M6/D6 — metric sizes Walkersele® M6/D6 — metric sizes (continued)

Shaft Housing Housing JW Chart JW Shaft Housing Housing JW Chart JW Shaft Housing Housing JW Chart JW Dia Dia Depth Dia Dia Depth Dia Dia Depth A B C number Part number A B C number Part number A B C number Part number 2 3 ⁷⁄₁₆ 104-200 WG050507 50 75 11 105-50 WG060502 440 490 22 105-440 WG064400 2¹⁄₈ 3¹⁄₈ ⁷⁄₁₆ 104-212 WG05054X 55 80 11 105-55 WG060553 460 510 22 105-460 WG064605 2¹⁄₄ 3¹⁄₄ ⁷⁄₁₆ 104-225 WG050574 60 85 11 105-60 WG06060X 480 530 22 105-480 WG06480X 2³⁄₈ 3³⁄₈ ⁷⁄₁₆ 104-237 WG050604 65 90 11 105-65 WG060650 500 550 22 105-500 WG065008 2¹⁄₂ 3¹⁄₂ ⁷⁄₁₆ 104-250 WG050639 70 102 12.5 105-70 WG060707 All dimensions in mm 2³⁄₄ 4 ¹⁄₂ 104-275 WG050701 75 107 12.5 105-75 WG060758 3 4¹⁄₄ ¹⁄₂ 104-300 WG050760 80 112 12.5 105-80 WG060804 3¹⁄₄ 4¹⁄₂ ¹⁄₂ 104-325 WG050833 85 117 12.5 105-85 WG060855 JW Chart 376 3¹⁄₂ 4³⁄₄ ¹⁄₂ 104-350 WG050892 90 122 12.5 105-90 WG060901 Walkersele® M6/D6/M — to DIN 3760/ (BS) ISO 6194-1 3³⁄₄ 5 ¹⁄₂ 104-375 WG050957 95 127 12.5 105-95 WG060952 4 5¹⁄₄ ¹⁄₂ 104-400 WG051015 100 132 12.5 105-100 WG061002 4¹⁄₄ 5³⁄₄ ⁵⁄₈ 104-425 WG051074 105 145 16 105-105 WG061053 Shaft Housing Housing JW Chart JW 4¹⁄₂ 6 ⁵⁄₈ 104-450 WG051147 110 150 16 105-110 WG06110X Dia Dia Depth number Part number 4³⁄₄ 6¹⁄₄ ⁵⁄₈ 104-475 WG051201 115 155 16 105-115 WG061150 A B C 5 6¹⁄₂ ⁵⁄₈ 104-500 WG051279 120 160 16 105-120 WG061207 * 62 85 10 376-062085 WG040609 5¹⁄₄ 6³⁄₄ ⁵⁄₈ 104-525 WG051333 125 165 16 105-125 WG061258 * 62 90 10 376-062090 WG040625 5¹⁄₂ 7 ⁵⁄₈ 104-550 WG051392 130 170 16 105-130 WG061304 * 63 85 10 376-063085 WG040633 5³⁄₄ 7¹⁄₄ ⁵⁄₈ 104-575 WG051465 135 175 16 105-135 WG061355 * 63 90 10 376-063090 WG040641 6 7¹⁄₂ ⁵⁄₈ 104-600 WG05152X 140 180 16 105-140 WG061401 65 85 10 376-065085 WG04065X 6¹⁄₄ 7³⁄₄ ⁵⁄₈ 104-625 WG051589 145 185 16 105-145 WG061452 65 90 10 376-065090 WG040668 6¹⁄₂ 8 ⁵⁄₈ 104-650 WG051651 150 190 16 105-150 WG061509 * 65 100 10 376-065100 WG040676 6³⁄₄ 8¹⁄₄ ⁵⁄₈ 104-675 WG051716 160 200 16 105-160 WG061606 * 68 90 10 376-068090 WG040684 7 8¹⁄₂ ⁵⁄₈ 104-700 WG051775 170 210 16 105-170 WG061703 * 68 100 10 376-068100 WG040692 7¹⁄₂ 9 ⁵⁄₈ 104-750 WG051902 180 220 16 105-180 WG061800 70 90 10 376-070090 WG040706 8 9¹⁄₂ ⁵⁄₈ 104-800 WG052038 190 230 16 105-190 WG061908 70 95 10 376-070095 WG040714 8¹⁄₂ 10 ⁵⁄₈ 104-850 WG05216X 200 240 16 105-200 WG062009 * 70 100 10 376-070100 WG040722 9 10¹⁄₂ ⁵⁄₈ 104-900 WG052283 210 250 16 105-210 WG062106 * 72 95 10 376-072095 WG040730 9¹⁄₂ 11 ⁵⁄₈ 104-950 WG052410 220 260 16 105-220 WG062203 * 72 100 10 376-072100 WG040749 10 11¹⁄₂ ⁵⁄₈ 104-1000 WG052542 230 270 16 105-230 WG062300 75 95 10 376-075095 WG040765 10¹⁄₂ 12¹⁄₄ ³⁄₄ 104-1050 WG052666 240 280 16 105-240 WG062408 75 100 10 376-075100 WG040757 11 12³⁄₄ ³⁄₄ 104-1100 WG052798 250 290 16 105-250 WG062505 * 78 100 10 376-078100 WG040781 11¹⁄₂ 13¹⁄₄ ³⁄₄ 104-1150 WG052925 260 304 20 105-260 WG062602 80 100 10 376-080100 WG040803 12 13³⁄₄ ³⁄₄ 104-1200 WG053042 270 314 20 105-270 WG06270X 80 110 10 376-080110 WG040811 13 14³⁄₄ ³⁄₄ 104-1300 WG053301 280 324 20 105-280 WG062807 85 110 12 376-085110 WG040854 14 15³⁄₄ ³⁄₄ 104-1400 WG053557 290 334 20 105-290 WG062904 85 120 12 376-085120 WG040862 15 16³⁄₄ ³⁄₄ 104-1500 WG053816 300 344 20 105-300 WG063005 90 110 12 376-090110 WG040889 310 354 20 105-310 WG063102 90 120 12 376-090120 WG040900 320 364 20 105-320 WG06320X 95 120 12 376-095120 WG040951 330 374 20 105-330 WG063307 95 125 12 376-095125 WG04096X 340 384 20 105-340 WG063404 100 120 12 376-100120 WG040986 350 394 20 105-350 WG063501 100 125 12 376-100125 WG041001 360 404 20 105-360 WG063609 100 130 12 376-100130 WG041028 370 414 20 105-370 WG063706 105 130 12 376-105130 WG041052 380 424 20 105-380 WG063803 * 105 140 12 376-105140 WG041060 390 434 20 105-390 WG063900 110 130 12 376-110130 WG041109 400 444 20 105-400 WG064001 110 140 12 376-110140 WG041117 420 470 22 105-420 WG064206 115 140 12 376-115140 WG04115X * 115 150 12 376-115150 WG041168 All dimensions in mm (continued overleaf)

To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz 31 Walkersele® M6/D6 standard range

JW Chart 376 (continued) Walkersele® M6/D6/M — to DIN 3760/ (BS) ISO 6194-1 Walkersele® success

Side thrusters repairs Shaft Housing Housing JW Chart JW Dia Dia Depth Swift action by James Walker and Blohm + Voss Repair A B C number Part number ensured that the Queen Mary 2 cruise liner set sail on 120 150 12 376-120150 WG041206 time after 11 days of classification work, painting and * 120 160 12 376-120160 WG041222 plant overhaul at Hamburg. 125 150 12 376-125150 WG041249 * 125 160 12 376-125160 WG041257 130 160 12 376-130160 WG041303 * 130 170 12 376-130170 WG04132X 135 170 12 376-135170 WG041354 140 170 15 376-140170 WG041400 145 175 15 376-145175 WG041451 150 180 15 376-150180 WG041508 160 190 15 376-160190 WG041605 170 200 15 376-170200 WG041702 180 210 15 376-180210 WG04180X 190 220 15 376-190220 WG041907 200 230 15 376-200230 WG042008 210 240 15 376-210240 WG042105 220 250 15 376-220250 WG042202 230 260 15 376-230260 WG04230X 240 270 15 376-240270 WG042407 Four 220mm Walkersele® M1/D7 seals were identified, 250 280 15 376-250280 WG042504 precision moulded in the UK, and delivered to Hamburg 260 300 20 376-260300 WG042601 in just two days to complete unscheduled work on the 280 320 20 376-280320 WG042806 ship’s starboard bow thrusters. 300 340 20 376-300340 WG043004 320 360 20 376-320360 WG043209 340 380 20 376-340380 WG043403 360 400 20 376-360400 WG043608 380 420 20 376-380420 WG043802 400 440 20 376-400440 WG044000 420 460 20 376-420460 WG044205 440 480 20 376-440480 WG04440X 460 500 20 376-460500 WG044604 480 520 20 376-480520 WG044809

Product : Date : Drawn by : Sketch reference : JAMES WALKER500 S.P.S. Ltd 540Rotary seals 203rd March 2012 376-500540Ian Harland Page 30 - Issue 44, P13 WG045007 Marcoms Department Description : Walkersele M6 D6 Chart- 376 housing dimensional nomenclature All dimensions in mm These sizes no longer appear in the standards quoted. * Walkersele's M6 D6 ; Chart 376 Self-retaining seal housing dimensional nomenclature

Shaft chamfer

Shaft Housing Ø ; A Ø ; B

Housing chamfer

Housing depth ; C

32 To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz Housing design & machining requirements

Product range : Date : Sketch reference : JAMES WALKER S.P.S. Ltd. Walkesele ; RRadial Lip Seals Lea et ; Issue 44 01-03-2012 Page 31 - Issue 44 - P13 Marcoms Department D6, D7 and D8 Lip design ; Housing dimensional nomenclature

Housings for Walkersele® D6,Housings D7 for& D6,D8 D7 designsand D8 design lip seals

Housings for retained seals Housings for self-retaining seals.

'RA' Ø 'RB' Housing bore Bolting R 0.25 / 0.50 chamfer ; See Table requirements All seal types

Housing bore Nominal housing Housing bore Ø 'B' - H9 section 'D' Ø 'B' - H8

Shaft Ø 'A' - h11* 15° Ø 'RC' Ø 'RD' Housing depth 'C' Chamfer length 'E' * Note that wide tolerance band h11 is applied to allow regrinding of worn shafts and may not necessarily reflect the original manufacturing tolerances. Nominal housing dimensions Recommended housing depths and sections for given shaft sizes

Walkersele® D6 design Retained seals Self-retaining seals Shaft Ø 'A' Nominal housing sizes Shaft Ø 'A' Nominal housing sizes mm inch Depth 'C' Section 'D' mm inch Depth 'C' Section 'D' > ≤ > ≤ mm inch mm inch > ≤ > ≤ mm inch mm inch - 35 - 1 3/8 10 3/8 11 7/16 - 65 - 2 1/2 10 3/8 10 3/8 35 65 1 3/8 2 1/2 11 7/16 12.5 1/2 65 100 2 1/2 4 12.5 1/2 12.5 1/2 65 100 2 1/2 4 12.5 1/2 16 5/8 100 250 4 10 15 5/8 15 5/8 100 250 4 10 16 5/8 20 3/4 250 400 10 16 20 3/4 20 3/4 250 400 10 16 20 3/4 22 7/8 400 600 16 24 22 7/8 22 7/8 400 600 16 24 22 7/8 25 1 600 900 24 35 1/2 25 1 25 1 600 - 24 - 25 1 32 1 1/4

Walkersele® D7 & D8 designs Retained seals Self-retaining seals Shaft Ø 'A' Nominal housing sizes Shaft Ø 'A' Nominal housing sizes mm inch Depth 'C' Section 'D' mm inch Depth 'C' Section 'D' > ≤ > ≤ mm inch mm inch > ≤ > ≤ mm inch mm inch 30 100 1.18 3.94 15 0.591 17.5 0.591 30 250 1.18 9.84 15 0.591 15 0.591 100 250 3.94 9.84 16 0.630 20 0.689 250 330 9.84 12.99 16 0.630 17.5 0.689 250 400 9.84 15.75 20 0.787 22 0.787 330 450 12.99 17.72 20 0.787 20 0.787 400 600 15.75 23.62 22 0.866 25 0.984 450 600 17.72 23.62 22 0.866 25 0.984 600 - 23.62 - 25 0.984 32 1.181 600 - 23.62 - 25 0.984 30 1.181

Housing depth 'C' tolerances Single seal Double seals

mm ± 0.1 + 0.2 - 0 inch ± 0.004 + 0.008 - 0

To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz 33 Housing design & machining requirements

Shaft & housing diameter tolerances — based on BS EN ISO 286-1 & 286-2 Self-retaining seals, All seals, shaft Ø Retained seals, housing Ø Nominal Ø (mm) housing Ø tolerance; tolerance; h11* (mm) tolerance; H9 (mm) H8 (mm) > ≤ Low High Low High Low High 18 30 - 0 -0.13 - 0 + 0.052 - 0 + 0.033 30 50 - 0 -0.16 - 0 + 0.062 - 0 + 0.039 50 80 - 0 -0.19 - 0 + 0.074 - 0 + 0.046 80 120 - 0 -0.22 - 0 + 0.087 - 0 + 0.054 120 180 - 0 -0.25 - 0 + 0.100 - 0 + 0.063 180 250 - 0 -0.29 - 0 + 0.115 - 0 + 0.072 250 315 - 0 -0.32 - 0 + 0.130 - 0 + 0.081 315 400 - 0 -0.36 - 0 + 0.140 - 0 + 0.089 400 500 - 0 -0.40 - 0 + 0.155 - 0 + 0.097 500 630 - 0 -0.44 - 0 + 0.175 - 0 + 0.110 630 800 - 0 -0.50 - 0 + 0.200 - 0 + 0.125 800 1000 - 0 -0.56 - 0 + 0.230 - 0 + 0.140 * Note that wide tolerance band h11 is applied to allow regrinding of worn shafts and may not necessarily reflect the original manufacturing tolerances. Chamfer details

Shaft chamfer Housing bore chamfer

Shaft Ø ‘A’ Shaft chamfer mm > ≤ length ‘E’ Min Where the nominal housing depth is equal to seal depth mm up to and including a seal depth of 10.00mm, the chamfer should not exceed 1.00mm x 30°. 3 50 8 For all seals above 10.00mm deep, the chamfer 50 250 10 should not exceed 2.00mm x 30°. 250 900 15 900 - 20 inch inch Where the nominal housing depth is equal to seal depth 0.12 1.97 5/16 up to and including a seal depth of 3/8 inch, 1.97 9.85 3/8 the chamfer should not exceed 0.04 inch x 30°. 9.85 31.50 9/16 For all seals above 3/8 inch deep, the chamfer should not exceed 0.08 inch x 30°. 31.50 - 3/4

Retaining plate dimensions & bolting details Plate thickness - Inside Ø - Inside Ø - 'RD' Shaft Ø 'A' (mm) Bolting requirements 'RA' Min (mm) Outside Ø 'RC' Max (mm) Max (mm) - 'RB' Min D7 & D8 Number > Single seal Double seal (mm) D6 design D6 design Ø (mm) PCD (mm) ≤ designs of bolts - 35 3.0 4.5 Ø B + 28 Ø A + 0.75C Ø A + 3 (Ø A + Ø B)/2 M5 4 Ø B + 13 35 65 4.0 6.0 Ø B + 30 Ø A + 0.75C Ø A + 3 (Ø A + Ø B)/2 M5 6 Ø B + 13 65 100 5.0 7.5 Ø B + 43 Ø A + 0.75C Ø A + 3 (Ø A + Ø B)/2 M8 6 Ø B + 20 100 250 7.0 10.5 Ø B + 45 Ø A + 0.75C Ø A + 4 (Ø A + Ø B)/2 M8 8 Ø B + 20 250 400 8.0 12.0 Ø B + 56 Ø A + 0.75C Ø A + 4 (Ø A + Ø B)/2 M10 8 Ø B + 24 400 600 10.0 15.0 Ø B + 65 Ø A + 0.75C Ø A + 4 (Ø A + Ø B)/2 M12 12 Ø B + 30 600 900 12.5 18.8 Ø B + 76 Ø A + 0.75C Ø A + 5 (Ø A + Ø B)/2 M14 16 Ø B + 34 900 1200 15.0 22.5 Ø B + 76 Ø A + 0.75C Ø A + 5 (Ø A + Ø B)/2 M14 20 Ø B + 34 Note 1: Retaining plate thicknesses and bolting recommendations are based on steel and stainless steel alloys. These recommendations may also be applied to aluminium alloys for endless retaining plates. Please consult us where aluminium alloy retaining plates in split form are intended to be used. Note 2: Walkersele® D7 and D8 designs need a retaining plate covering the full base width of the seal to support the heel under fluid pressure conditions, especially when an otherwise ‘self-retaining’ seal is fitted with its heel facing outwards.

34 To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz Fitting Guide for ® Walkersele Rotary Lip Seals

A: Fabric Back Endless Seal (eg, endless types M1, M5, M9, Elast-O-Lion® or Utraglide) B: Fabric Back Split Seal (eg, split types M1, M5, M9, Elast-O-Lion® or Utraglide) C: Metal Band — Self-retaining Seal (eg, M6, M8, Elast-O-Lion® or Utraglide with ‘M’ or ‘S’ backs)

Please read these instructions before starting to fit the seal

A: Fabric Back Endless Seal (eg, endless types M1, M5, M9, Elast-O-Lion® or Ultraglide)

Check that: GB Check seal, shaft & housing D Die Dichtung, die Welle und das Fitting Guide for Seal is in excellent condition. Gehäuse kontrollieren ® Walkersele Rotary Lip SealsShaft has recommended lead-in chamfer. NL Controleer de seal, de as en de Shaft and housing are burr-free. behuizing A: Fabric Back Endless Seal (eg, endless types M1, M5, M9, Elast-O-Lion® or Utraglide) ® ES Comprobar el retén, el eje y el B: Fabric Back Split Seal (eg, split types M1, M5, M9, Elast-O-Lion or Utraglide) C: Metal Band — Self-retaining Seal (eg, M6, M8, Elast-O-Lion® or Utraglide with ‘M’ or ‘S’ backs) alojamiento

Please read these instructions before starting to fit the seal

A: Fabric Back Endless Seal (eg, endless types M1, M5, M9, Elast-O-Lion® or Ultraglide) Thoroughly clean the housing and GB Clean housing & adjacent shaft. ® Check that: GB Check seal, shaft & housing Walkersele fitting techniquesadjacent shaft. WipeD Die the Dichtung, seal die with Welle a und clean das Wipe seal Seal is in excellent condition. Gehäuse kontrollieren Shaft has recommendedcloth lead-in to remove chamfer. anyNL Controleer dust that de seal, has de as en de D Das Gehäuse und die Welle Shaft and housing are burr-free. behuizing collected in storage.ES Comprobar el retén, el eje y el säubern. Dichtung säubern alojamiento NL Maak de behuizing en de daarbij behorende as schoon. Maak de

Thoroughly clean the housing and GB Clean housing & adjacent shaft. seal schoon adjacent shaft. Wipe the seal with a clean Wipe seal ES Limpiar el alojamiento y la zona General preparation for all installations A: Fabric back endlesscloth seals to remove any dust that has D Das Gehäuse und die Welle collected in storage. säubern. Dichtung säubern adyacente del eje. Limpiar el retén (eg, endless types M1, M5, M9, M11, M12, M13, M22, NL Maak de behuizing en de daarbij Millglide K, Supaglide K, Ultraglide K, or Aflas®) behorende as schoon. Maak de Important: It is inadvisable to re-install a Walkersele® once seal schoon ES Limpiar el alojamiento y la zona it has been removed from itsProduct housing. range : To ensureDate long-term : Sketch reference : JAMES WALKER S.P.S. Ltd. Walkesele ; Rotary Seals Leaflet 15-03-2012 Page 33 - Issue 44 - P13 A1) Apply a Applysmear ofa oilsmear or of oil or grease to the seal GB efficient operation, we suggest you fit a new Walkersele. adyacente del eje. Limpiar el retén Lubricate seal lip, spring & shaft Marcoms Department Walkersele D6 - Direction of sealing. grease to thelip, seal seal lip, OD, spring groove, spring D Dichtungslippe, Feder und Welle spring housing recess, Apply a smear of oilhousing or grease to and the seal shaft GB immediatelyLubricate seal lip, springbefore & shaft schmieren lip,and seal OD,shaft, spring immediately groove, spring D Dichtungslippe, Feder und Welle housingbefore and fitting shaftfitting. immediately the seal. For before this, use schmierenthe bearing lubricant, NL Smeer de lip van de seal, de veer Fitting Guide for fitting.For For this this, use useor the the other bearingbearing lubricant,lubricant NL compatibleSmeer de lip van with de seal, the de veer ® or other lubricant compatible with the en as en as medialubricant being sealed. or mediaother lubricant being sealed.ES Lubricar el labio del retén, el ES Lubricar el labio del retén, el Walkersele Rotary Lip Seals compatible with the media muelle y el eje being sealed. muelle y el eje

® A: Fabric Back Endless Seal (eg, endless types M1, M5, M9, Elast-O-Lion or Utraglide) Ensure spring is fitted correctly in recess GB Fit spring ® behind the seal lip. D Feder montieren B: Fabric Back Split Seal (eg, split types M1, M5, M9, Elast-O-Lion or Utraglide) NL Breng de veer op zijn plaats ® ES Montar el muelle C: Metal Band — Self-retaining Seal (eg, M6,Direction M8, Elast-O-Lion or Utraglide with ‘M’ or ‘S’ backs) Ensure spring is fitted correctly in recess GB Fit spring behind the seal lip. D Feder montieren Please read these instructions before startingof sealing to fit the seal Fitting Guide for A2) Ensure spring is fitted NL Breng de veer op zijn plaats ® correctly in recess behind ES Montar el muelle Walkersele Rotarythe seal Lip lip.® Seals A: Fabric Back Endless Seal (eg, endless types M1, M5, M9, Elast-O-Lion or Ultraglide) A: Fabric Back Endless Seal Check that: GB Check seal, shaft & housing 1) The groove formed between the lip seal and the back D DieFlex Dichtung, the seal in hands die Welleto ensure und an dasGB Flex seal to equalise tension should normally face the direction to be sealed. Seal is in excellent condition.Fitting Guide for Gehäuseeven distribution kontrollieren of spring tension. D Dichtung biegen um die Spannung ® zu verteilen. Shaft has recommendedWalkersele lead-in chamfer. RotaryNL LipControleer Seals de seal, de as en deNL Buig de seal in de juiste vorm Shaft and housing are burr-free. A3) Flexbehuizing the seal in hands ES Flexar el retén para distribuir la 2) With an endless seal, a lead-in should be provided at the A: Fabric Back Endless SealESto ensureComprobar an even el retén, el eje y el tensión del muelle ends of shafts, roll necks, abutment rings, etc, over which the distributionalojamiento of spring tension. Fittingseal Guide has to pass, tofor avoid damaging the seal lips (see Chamfer Flex the seal in hands to ensure an GB Flex seal to equalise tension details, page 34). ® even distribution of spring tension. D Dichtung biegen um die Spannung zu verteilen. Walkersele Rotary Lip Seals NL Buig de seal in de juiste vorm ES Flexar el retén para distribuir la tensión del muelle Thoroughly clean the housing® and GB Clean housing & adjacent shaft. A: Fabric Back Endless Seal (eg, endless3) Thoroughly types M1, clean M5, the M9, Elast-O-Lion or Utraglide) When seal is in housing, the spring GB Insert seal into housing to 1/3 depth adjacent shaft. Wipe® the seal with a clean Wipeand lipseal should face the fluid to be D Dichtung ins Gehäuse einbringen bis housing and adjacent sealed. B: Fabric Back Split Seal (eg, split types M1, M5, M9, Elast-O-Lion or Utraglide) 1/3 der Einbauhöhe shaft. Wipe cloththe seal to with remove a ® any dust that has D Das Gehäuse und die Welle C: Metal Band — Self-retaining Seal (eg, M6, M8, Elast-O-Lion or UtraglideImportant: withWhen ‘M’ seal or is ‘S’ in backs)housing, the spring and lip NL Druk de seal met enige inspanning clean cloth tocollected remove any in storage. säubern.500mm ODDichtung — insert seal säubern evenly into should face the fluid to be sealed. housing to one-third of seal depth. op 1/3 diepte in de behuizing dust that has collected in NL Maak de behuizing en de daarbijES Insertar el retén en el alojamiento 1/3 storage. When seal is in housing, the spring GB Insert seal into housing to 1/3 depth Please read these instructions before starting to fit the seal A4) <500mmand lip should OD face — the insert fluid to seal be D Dichtung ins Gehäusede la profundidad einbringen bis sealed.behorende 500mm OD as — insertschoon. seal into Maak de evenly intohousing housing to one-thirdto one-third of seal depth1/3 at der Einbauhöhe seal schoon® NL Druk de seal met enige inspanning of seal 500mmdepth.12, OD6, 9, — & insert 3 o’clock seal evenly positions, into A: Fabric Back Endless Seal (eg, endless types M1, M5, M9, Elast-O-LionES housing to one-thirdor Ultraglide) of seal depth. op 1/3 diepte in de behuizing Limpiarrespectively. el alojamiento Then fit at intermediate yES laInsertar zona el retén en el alojamiento 1/3 >500mm adyacente 500mm positions.OD OD — — insert insert del sealseal eje. into Limpiarde ella profundidad retén into housinghousing to to one-third one-third of seal of depth at Check that: GB 12, 6, 9, & 3 o’clock positions, seal depthCheck at 12, seal, 6, 9 &shaft 3 & housing 4) Check that seal is correct respectively. Then fit at intermediate o’clockD positions.Die positionsPush Dichtung, seal respectively. firmly anddie evenly Welle until und it is dasGB Push seal evenly until housed size for shaftApply and housing, a smear of oil or grease to the seal GB Lubricate seal lip, spring & shaft Seal is in excellent condition. Then fitGehäuse atseated intermediate securely kontrollieren at bottom of D Die Dichtung gleichmäßig ins and shaft andlip, housing seal OD, are spring groove, spring D Dichtungslippe,housing. Feder und Welle Gehäuse drücken Shaft has recommended lead-in chamfer. positions.NL Controleer de seal, de as en de burr-free. housing and shaft immediately before Pushschmieren seal firmly and evenly until it is GB Push sealNL evenlyDruk until de housed seal gelijkmatig aan tot Shaft and housing are burr-free. seatedbehuizing securely at bottom of D Die Dichtung dezegleichmäßig helemaal ins in de behuizing zit fitting. For this, use the bearing lubricant, NL housing.Smeer de lip van de seal,Gehäuse de veer ESdrückenEmpujar el retén uniformemente ES NL Comprobar el retén, el ejeDruk y deel seal gelijkmatighasta que aan encaje tot or other lubricant compatible with the en as deze helemaal in de behuizing zit alojamiento ES ES Empujar el retén uniformemente media being sealed. Lubricar el labio del retén,hasta el que encaje Fit further seal, if required, repeating steps muelleA1 - A7. y el eje GB Fit further seal if required (steps A1-A7) To order or get further details, call your local contact shown Fiton further rear seal, cover if required, or listed repeating at www.jameswalker.biz steps A1 - A7. 35 GB Fit further seal if required (steps D Weitere Dichtungen einbauen, Thoroughly clean the housing and GB Clean housing & adjacentA1-A7) shaft. D Weitere Dichtungenwenn einbauen,erforderlich (Schritte A1-A7) adjacent shaft. Wipe the seal with a clean Wipe seal wenn erforderlichwiederholen (Schritte A1-A7) GB Fit spring wiederholen clothEnsure to springremove is any fitted dust correctly that has in recess D Das Gehäuse und die Welle NL Plaats nog een seal, indien D NL Plaats nog eennoodzakelijk seal, indien (stappen A1-A7) behind the seal lip. Feder montieren noodzakelijk (stappen A1-A7) collected in storage. säubern. Dichtung säubern ES Montar retenes adicionales si fuera NL Breng de veer op zijn plaatsES Montar retenes adicionales si fuera NL Maak de behuizing en de necesariodaarbij (pasos necesario A1-A7) (pasos A1-A7) ES Montar el muelle behorende as schoon. Maak de seal schoon ES Limpiar el alojamiento y la zona adyacente del eje. Limpiar el retén

Apply a smear of oil or grease to the seal GB Lubricate seal lip, spring & shaft lip, seal OD, spring groove, spring D Dichtungslippe, Feder und Welle housing and shaft immediately before schmieren fitting. For this, use the bearing lubricant, NL Smeer de lip van de seal, de veer or other lubricant compatible with the en as media being sealed. ES Lubricar el labio del retén, el muelle y el eje

Ensure spring is fitted correctly in recess GB Fit spring behind the seal lip. D Feder montieren NL Breng de veer op zijn plaats ES Montar el muelle Fitting Guide for Fitting Guide for® ® Walkersele Rotary Lip Seals

A: Fabric Back Endless Seal Fitting Guide for A: Fabric Back Endless Seal ® Walkersele Rotary Lip Seals Flex the seal in hands to ensure an GB Flex seal to equalise tension Flex the seal in hands to ensure an GB Flex seal to equalise tension even distribution of springA: Fabric tension. Back EndlessD Dichtung Seal biegen um die Spannung even distribution of spring tension. D Dichtung biegen um die Spannung zu verteilen. Fitting Guide for zu verteilen. ® NL Buig de seal in de juiste vorm GB NL Buig de Fitseal retaining in de plate juiste and tighten vorm evenly until Fit retaining plate evenly Fitting Guide for Walkersele Rotary Lip Seals ES Flexar elmetal-to-metal retén para contact distribuir is achieved. la D Rückhalteplatte verschrauben. ® ES Flexar el retén para distribuir la NL Plaats de opsluitdeksel gelijkmatig tensión del muelle tensión del muelle ES Ajustar la palca de retención Walkersele Rotary Lip Seals A: Fabric Back Endless Seal uniformemente

Fit retaining plate and tighten evenly until GB Fit retaining plate evenly A: Fabric Back Endless Seal metal-to-metal contact is achieved. D Rückhalteplatte verschrauben. NL Plaats de opsluitdeksel gelijkmatig ES Ajustar la palca de retención Flex the seal in hands to ensure an GB Flex seal to equalise tension uniformemente even distribution of spring tension. D WhenDichtung seal is in biegenhousing, um the diespring Spannung G B Insert seal into housing to 1/3 depth When seal is in housing, the spring GB Insert seal into housing to 1/3 depth ® and lipzu should verteilen. face the fluidB: Fabric to be Back DSplitDichtung Seal (eg, ins split Gehäuse types M1, einbringen M5, M9, Elast-O-Lion bis or Ultraglide) sealed.andNL lipBuig should de sealface inthe de fluid juiste to be vorm D Dichtung ins Gehäuse einbringen bis sealed. 1/3 der Einbauhöhe ES Flexar el retén para distribuir la 1/3 der Einbauhöhe NL Druk de Checkseal that:met enige inspanning GB Check seal, shaft & housing 500mm OD — insert seal evenly into NL Druk de seal met enige inspanning 500mmtensión OD del— insert muelle seal evenly into op 1/3 diepte in de behuizing D Die Dichtung, die Welle und das housing to one-third of seal depth. op 1/3 diepteSeal is in in excellent de behuizing condition. Gehäuse kontrollieren housing to one-third of seal depth. ES Shaft and housing are burr-free. NL ® Insertar el retén® en el alojamiento 1/3 Contoleer de seal, de as en de (eg, split types M1, M5,E SM9,Insertar Elast-O-Lion el retén or Ultraglide) en el alojamiento 1/3 Walkersele fittingB: Fabric techniques Back Split Seal de la profundidad behuizing 500mm OD — insert seal into ES Comprobar el retén, el eje y el 500mm OD — insert seal into de la profundidad housing to one-third of seal depth at alojamiento housing to one-third ofCheck seal that: depth at GB 12, 6, 9, & 3 o’clock positions, Check seal, shaft & housing 12, 6, 9, & 3 o’clock positions, D Die Dichtung, die Welle und das Seal is in excellent condition. respectively. Then fit at intermediate ThoroughlyGehäuse clean kontrollieren the housing and GB Clean housing & adjacent shaft. respectively. Then fit atShaft intermediate and housing are burr-free. NL positions. adjacentContoleer shaft. Wipede seal, the deseal as with en ade clean Wipe seal positions. clothbehuizing to remove any dust that has D Das Gehäuse und die Welle When seal is in housing, the spring GB Insert seal into housing to 1/3 depth ES collectedComprobar in storage. el retén, el eje y el säubern. Dichtung säubern. and lip should face the fluid to be D Dichtung ins Gehäuse einbringen bis alojamiento NL Maak de behuizing en de daarbij sealed. 1/3 der Einbauhöhe behorende as schoon. Maak de GB seal schoon PushNL seal firmly and evenly until it is Push seal evenly until housed PushDruk seal defirmly seal and met evenlyB: enige Fabric until inspanning it is back G B splitPush sealssealGB evenly until housed ES Limpiar el alojamiento y la zona 500mm OD — insert seal evenly into seated securely at bottomThoroughly of clean the housingD andDie DichtungClean gleichmäßig housing & adjacent ins shaft. seatedop securely1/3 diepte at bottomin de(eg,adjacent behuizing ofsplit shaft. types Wipe theM1, seal M5,D with Die M12,a clean Dichtung M22, MillglideWipe gleichmäßig seal K, ins adyacente del eje. Limpiar el retén housing to one-third of seal depth.A5) Push sealhousing. firmly and GehäuseD drückenDas Gehäuse und die Welle housing.ES Insertar el retén enSupaglidecloth el to removealojamiento K, any or dust Ultraglide that 1/3 has Gehäuse K) drücken evenly until it is seated collected in storage. NL Druk de sealsäubern. gelijkmatig Dichtung säubern. aan tot de la profundidad NL Druk de TsealNakeL Maak the gelijkmatig seal de spring,behuizing unscrew enaan de at daarbij totthe join. It GB Unwind spring at join 500mm OD — insert seal intosecurely at bottom of the deze helemaalhas a left-hand in de thread. behuizing zit D Feder in Verbindungspunkt deze helemaalbehorende in de as behuizingschoon. Maak dezit housing to one-third of seal depthhousing. at ES seal schoon aufdrehen Empujar el retén uniformemente NL 12, 6, 9, & 3 o’clock positions, ES Empujar EelS Limpiarretén eluniformemente alojamiento y la zona Neem de splitverbinding van de hasta que encajeadyacente del eje. Limpiar el retén veer los respectively. Then fit at intermediate Fitting Guide for hasta que encaje ES Desenroscar el muelle en su unión positions. ® Take the seal spring, unscrew at the join. It GB Unwind spring at join has a left-hand thread. B1)D Feder Take in the Verbindungspunkt seal spring and Fit further seal, if required, repeating steps A1 - A7. WalkerseleGB RotaryFit further seal if required Lip (steps Seals Fit further seal, if required, repeating steps A1 - A7. GB Fit furtherunscrew sealaufdrehen if at required join. It has (steps a left- A1-A7) NL Neem de splitverbinding van de A1-A7) handveer thread. los Push seal firmly and evenly until it is GB Push seal evenlyFitting until housed Guide for D Weitere Dichtungen einbauen, ®D Weitere DichtungenES Desenroscar eleinbauen, muelle en su unión seated securely at bottom of D Die DichtungB: Fabric gleichmäßig Back ins Splitwenn Seal erforderlich (Schritte A1-A7) Walkersele Rotarywenn erforderlich Lip Seals (Schritte A1-A7) housing. Gehäuse drücken wiederholen wiederholen NL Druk de seal gelijkmatigB: Fabric aan Back tot SplitNL Plaats Seal nog een seal, indien NL Plaats nog een seal, indien deze helemaal in de behuizing zit noodzakelijk (stappen A1-A7) noodzakelijk (stappen A1-A7) ES Empujar el retén uniformemente ES Montar retenes adicionales si fuera ES Montar retenes adicionales si fuera hasta que encaje necesario (pasos A1-A7) necesario (pasos A1-A7) B2) Place spring around A6) Fit further seal, if required, shaft. Twist spring several Fit further seal, if required, repeating steps A1 - A7. FittingFittingFitting Guide Guide GuideG Bfor forFit for further seal if required (steps times as if unscrewing, following steps A1 ®to ®A5.® A1-A7) Fitting Guide for then place ends together WalkWalkWalkerseleerseleerseleD Rotary Rotary Rotary Lip Lip Lip Seals Seals Seals® Weitere Dichtungen einbauen, Placeand springrejoin around spring shaft. by Twist spring GB Pass spring around shaft & rejoin wenn erforderlichWalk (Schritteersele A1-A7) Rotary Lipseveralscrewing Seals times asends if unscrewing, together then in place D Die Feder um die Welle herum B:B: FabricB: Fabric Fabric Back Back Back Split Split Split Seal Seal Seal wiederholen endsopposite together direction. and rejoin spring by legen, sie wieder zusammendrehen B: Fabric Back Split Seal screwing ends together in opposite NL Breng de veer om de as en bevestig NL Plaats nog een seal, indien direction. ES Pasar el muelle alrededor del eje y GB noodzakelijk (stappen A1-A7) Place spring around shaft.juntarlos Twist spring Pass spring around shaft & rejoin ES Montar retenes adicionales si fuera several times as if unscrewing, then place D Die Feder um die Welle herum necesario (pasos A1-A7) Bend outwardsends the endstogether of the seal and to rejoinGB Bend spring seal ends by outwards legen, sie wieder zusammendrehen D counter any tendency to curl inwards. Enden der Dichtung nach außen NL Fitting Guide for screwing ends togetherund in innenopposite biegen, um Enden für Breng de veer om de as en bevestig ® den Einbau zu positionieren ES direction. NL Buig de seal uiteinden naar buiten Pasar el muelle alrededor del eje y Walkersele Rotary Lip Seals ES Doblar los extremos de retén hacia juntarlos PlacePlace springPlace spring springaround around around shaft. shaft. Twistshaft. Twist spring Twist spring spring GB GPassB GPassB springPass spring spring around around around shaft shaft & shaft rejoin & rejoin & rejoin fuera severalseveralseveral times times astimes ifas unscrewing, ifas unscrewing, if unscrewing, then then place then place place D DDieDieD FederDie Feder Federum um die umdie Welle dieWelle herumWelle herum herum A: Fabric Back Endless Seal endsends togetherends together together and and rejoin and rejoin springrejoin spring springby by by Placelegen, springlegen, legen,sie around siewieder siewieder shaft. wieder zusammendrehen zusammendrehen Twist zusammendrehen spring GB Pass spring around shaft & rejoin screwingscrewingscrewing ends ends together ends together together in opposite in opposite in opposite severalNL NBrengL N BrengtimesL Brengde as deveer if veerdeunscrewing, om veer om de omdeas enasde then enbevestigas placebevestigen bevestig D Die Feder um die Welle herum direction.direction.direction. endsES EPasarS togetherEPasarS Pasarel muelle eland muelle el rejoin muelle alrededor alrededor spring alrededor bydel del eje deleje y ejey y legen, sie wieder zusammendrehen NL GB A7) Fit retaining plate screwingjuntarlosjuntarlos endsjuntarlos togetherBend in opposite outwards theBreng ends de veerof the om de seal as en tobevestig Bend seal ends outwards and Fittighten retaining evenly plate until and tighten evenly until GB Fit retaining plate evenlydirection. counter any tendencyES Pasar to el muellecurl inwards.alrededor del eje y D Enden der Dichtung nach außen metal-to-metalmetal-to-metal contact contact is achieved. D Rückhalteplatte verschrauben. juntarlos GB Lubricate seal lip, spring & shaft BendBend outwardsBend outwards outwards NtheL the endsPlaats theends of ends thedeof the sealofopsluitdeksel theseal to seal to to GB GgelijkmatigBendB ApplyGBendB3)B sealBend aBendseal smear ends seal ends outwards outwards ofends oiloutwards or outwards grease the to ends the seal und innen biegen, um Enden für is achieved. lip, seal OD, spring groove, spring D Schmieren der Dichtungslippe, countercountercounter any any tendency any tendencyES tendencyAjustar to curlto curl to inwards.la curl inwards.palca inwards. de retención D DEndenEndenD Enden der der Dichtung der Dichtung Dichtung nach nach außen nach außen außen of the seal to counteract any Feder und Welle den Einbau zu positionieren Bendund outwardshousingund innenund innen andbiegen,innen the biegen, shaftends biegen, um immediatelyof um Endenthe umEnden seal Enden für to before für für GB Bend seal ends outwards uniformemente NL Smeer de lip van de seal, de veer Note: A lip support plate, counterdenfitting.dentendency anyEinbauden Einbautendency For Einbau zuthis, positionierenzuto useto positionieren zucurl curl thepositionieren inwards. inwards.bearing lubricant,D Enden der Dichtung nach außen NL en de as Buig de seal uiteinden naar buiten NL NBuigL orNBuigL otherdeBuig deseal lubricant sealde uiteinden seal uiteinden compatibleuiteinden naar naar buiten naar with buiten buitenthe und innen biegen, um Enden für where needed, is fitted prior ES Lubricar el labio del retén, el ES ES EDoblarS mediaEDoblarS Doblar los being los extremos losextremos sealed. extremos de deretén reténde haciaretén hacia hacia den Einbau zu positionieren Doblar los extremos de retén hacia to the retaining plate. Push muelle y el eje fuerafuerafuera NL Buig de seal uiteinden naar buiten the lip support plate firmly ES Doblar los extremos de retén hacia fuera and evenly into position until fuera seated securely at the base Pass seal around shaft, with lip and spring GB Position seal & carefully fit spring of the Walkersele®. Ensure recess facing the fluid to be sealed. D Dichtung positionieren und Feder Carefully fit spring into recess behind lip. sorgfältig einbauen. the installed lip support plate NL Breng de veer op zijn plaats does not contact the shaft. ES Posicionar el retén y montar el GB GB GB ApplyApply aApply smear a smear a smearof oilof ®oroil of grease oroil grease or grease to theto the sealto theseal seal LubricateLubricateLubricate seal seal lip, seal lip, spring lip,spring spring & shaft & shaft & shaft muelle cuidadosamente B: Fabric Back Split Seal (eg, split types M1, M5, M9,lip, Elast-O-Lion lip,seal lip,seal OD, seal OD, spring OD, spring springgroove, or groove, Ultraglide) groove, spring spring spring D DSchmierenSchmierenD Schmieren der der Dichtungslippe, der Dichtungslippe, Dichtungslippe, GB Lubricate seal lip, spring & shaft housinghousinghousing and and shaft and shaft immediately shaft immediately immediately before before before ApplyFeder aFeder smear Federund und of Welle oilund Welle or Welle grease to the seal D Schmieren der Dichtungslippe, fitting.fitting. fitting.For For this, Forthis, use this, use the use the bearing thebearing bearing lubricant, lubricant, lubricant, lip,N L NsealSmeerL NSmeer OD,L Smeer de spring delip lipvande groove, vanlip de van deseal, spring seal,de de seal, deveer veerde veer Feder und Welle or otheror otheror lubricant other lubricant lubricant compatible compatible compatible with with the with the the housingen ende and deasen shaft asde as immediately before NL Smeer de lip van de seal, de veer Check that: mediamedia mediabeing being sealed.being Gsealed.B sealed. Check seal, shaft & housingfitting.ES ELubricarS ForELubricarS this,Lubricar el use labioel labiothe el del labiobearing del retén, delretén, lubricant, retén,el el el GB Lubricate seal lip, spring & shaft D Die Dichtung, die Welleor other undmuellemuelle lubricantdasmuelle y el y ejeel compatible Applyy eje el eje a with smear the of oilen or de greaseas to the seal Seal is in excellent condition. media being sealed. ES Lubricar el labio del retén, el D Schmieren der Dichtungslippe, Gehäuse kontrollieren lip, seal OD, spring muellegroove, y el eje spring Shaft and housing are burr-free. NL Contoleer de seal, de as en de Feder und Welle 36 To order or get further details, call your local contactPass shownPass sealPass seal around sealon around reararound shaft,behuizing shaft, cover withshaft, with lip with andlipor andlip listedspring and spring spring at G Bwww.jameswalker.biz GPositionB GPositionB Position seal seal housing& sealcarefully & carefully & carefully fit and springfit spring fit springshaft immediately before recessrecess recessfacing facing facingtheE the Sfluid Comprobarthefluid to fluid beto besealed. to sealed.be sealed.el retén, elD ejeDDichtung yDichtungD elDichtung positionieren positionieren positionieren und und Feder und Feder Feder NL Smeer de lip van de seal, de veer Pass seal around shaft,fitting. with lipFor and this,spring useGB Positionthe bearing seal & carefully lubricant, fit spring CarefullyCarefullyCarefully fit spring fit spring fit springintoalojamiento into recess into recess recessbehind behind behind lip. lip. lip. sorgfältigsorgfältigsorgfältig einbauen. einbauen. einbauen. recessNL NBrengL NfacingBrengL Brengde thedeveer fluidveerdeor op veer tootheropzijn be zijnop plaats sealed. zijn plaats lubricant plaats DcompatibleDichtung positionieren with theund Feder en de as CarefullyES EPosicionarS EPosicionarS fitPosicionar spring el into reténel retén elrecess yretén montar y montarbehind y montar el lip.el el sorgfältig einbauen. ES Lubricar el labio del retén, el muellemuellemuelle cuidadosamente cuidadosamente mediacuidadosamente being sealed.NL Breng de veer op zijn plaats ES Posicionar el retén y montar el muelle y el eje Thoroughly clean the housing and GB Clean housing & adjacent shaft. muelle cuidadosamente adjacent shaft. Wipe the seal with a clean Wipe seal cloth to remove any dust that has D Das Gehäuse und die Welle collected in storage. säubern. Dichtung säubern. NL Maak de behuizing en de daarbij GB Position seal & carefully fit spring behorende as schoon. Maak de Pass seal around shaft, with lip and spring seal schoon recess facing the fluid to be sealed. D Dichtung positionieren und Feder ES Limpiar el alojamiento y la zona Carefully fit spring into recess behind lip. sorgfältig einbauen. adyacente del eje. Limpiar el retén NL Breng de veer op zijn plaats ES Posicionar el retén y montar el Take the seal spring, unscrew at the join. It GB Unwind spring at join has a left-hand thread. D Feder in Verbindungspunkt muelle cuidadosamente aufdrehen NL Neem de splitverbinding van de veer los ES Desenroscar el muelle en su unión Fitting Guide for ® Walkersele Rotary Lip Seals

A: FabricFitting Back Guide Endless for Seal (eg, endless types M1, M5, M9, Elast-O-Lion® or Utraglide) ® FittingFitting Guide® Guide for for B: Fabric Back Split Seal (eg, split types M1, M5, M9, Elast-O-Lion or Utraglide)® ® Walkersele Rotary Lip Seals® C: Metal Band — Self-retaining Seal (eg, M6, M8, Elast-O-LionWalkerseleWalkerseleFitting or Utraglide Guide with Rotary ‘M’ for or Rotary‘S’ backs) Lip LipSeals Seals ® B: Fabric Back Split Seal Walkersele Rotary Lip Seals Please read these instructions before starting to fit theB: sealFabricB: Fabric Back Back Split SealSplit Seal A: Fabric Back Endless Seal (eg, endlessB: typesFabric M1, Back M5, M9, Split Elast-O-Lion Seal ® or Ultraglide) Insert sealInsert evenly seal into evenly housing into housingwith split with splitGB InsertGB sealInsert into seal housing into housing to 1/3 to 1/3 section first.section first. depth depth Check that: GB D CheckInsert seal,seal evenly shaft into & housing housing with splitDichtung D GBDichtung insInsert Gehäuse insseal Gehäuse intoeinbringen housing einbringen to 1/3 bis 1/3 der Einbauhöhe DOn horizontalDiesectionOn Dichtung, horizontal shafts first. put shafts splitdie at putWelle top. split atund top. das bis depth1/3 der Einbauhöhe Seal is in excellent condition. Gehäuse kontrollieren NL DrukNL de DrukDsealDichtung metde seal enige insmet inspanning Gehäuse enige inspanning einbringen op 1/3 diepteop 1/3bis in diepte1/3 de derbehuizing in Einbauhöhe de behuizing Shaft has recommended lead-in chamfer. < 500mmNL 500mm 500mm ODpositions. — ODinsert — seal insert seal into housing Applybefore a smear fitting of oilfitting. orthe grease seal. For to the this, seal useGB Lubricatethe bearing seal lip, springlubricant, & shaft NL Smeer de lip van de seal, de veer into housing to one-third of seal depth at 12, 6, 9 & 3 o’clock lip,For seal this OD, springuse the groove, bearing spring D Dichtungslippe, Feder und Welle to one-third of seal depth at 12, 6, 9, & 3 housing and shaftor immediately other beforelubricant compatibleschmieren with the en as positions respectively. Then fit at intermediate positions. lubricant or other lubricant Press theo’clock seal firmly positions, and evenly respectively.until it is GB ThenPush seal fit at evenly until housed fitting. For this, usemedia the bearing being lubricant, sealed. NL Smeer de lip van de seal, de veer ES or compatibleother lubricant compatiblewith the mediawith the en as Lubricar el labio del retén, el seated intermediatesecurely at bottom positions. of housing. D Gleichmäßiges Drücken der Dichtung ermöglicht Einbau ins mediabeing being sealed. sealed. ES Lubricar el labio del retén, el muelle y el eje Gehäuse muelle y el eje NL Druk de seal gelijkmatig aan tot Press the seal firmly and evenly dezeuntil in it de is behuizingGB zitPush seal evenly until housed B7) Push seal firmly and ES Empujar el retén uniformemente Ensure spring is fitted correctly in recess GB Fit spring seated securely at bottom of housing. D Gleichmäßiges Drücken der D Feder montieren evenly until it is seated hasta que encaje behind the seal lip. GB Fit spring securely at bottom of the Dichtung ermöglichtEnsure Einbau spring ins is fittedNL Breng correctly de veer op zijn in plaats recess behind the seal lip.ES Montar el muelle D Feder montieren housing. GB GehäuseC2) Ensure spring is fitted Fit further seal, if required, by repeating steps B1 - B9. Fit further seals if required (repeat NL steps B1-B9) NL Druk de sealcorrectly gelijkmatig in recess behindaan tot Breng de veer op zijn plaats D Weitere Dichtungen einbauen,deze in dethe behuizing seal lip. zit ES Montar el muelle wenn erforderlich (Schritte B1-B9) wiederholen. ES Empujar el retén uniformemente NL Plaats nog een seal, indienhasta que encaje noodzakelijk (stappen B1-B9) ES Montar retenes adicionales si fuera necesario (pasos B1-B9) Fit further seal, if required, by repeating steps B1 - B9. GB Fit further seals if required (repeat steps B1-B9) D Weitere Dichtungen einbauen, To order or get further details, call your local contact shown on rear cover or listedwenn at www.jameswalker.biz erforderlich (Schritte B1-B9)37 Fit retaining plate and tighten evenly until GB Fit retaining plate evenlywiederholen. metal-to-metal contact is achieved. D Rückhalteplatte verschrauben.NL Plaats nog een seal, indien NL Plaats de opsluitdeksel gelijkmatig ES Ajustar la palca de retenciónnoodzakelijk (stappen B1-B9) uniformemente ES Montar retenes adicionales si fuera necesario (pasos B1-B9)

Fit retaining plate and tighten evenly until GB Fit retaining plate evenly metal-to-metal contact is achieved. D Rückhalteplatte verschrauben. NL Plaats de opsluitdeksel gelijkmatig ES Ajustar la palca de retención uniformemente Fitting Guide for ® Walkersele Rotary Lip Seals

A: Fabric Back Endless Seal (eg, endless types M1, M5, M9, Elast-O-Lion® or Utraglide) B: Fabric Back Split Seal (eg, split types M1, M5, M9, Elast-O-Lion® or Utraglide) C: Metal Band — Self-retaining Seal (eg, M6, M8, Elast-O-Lion ® or Utraglide with ‘M’ or ‘S’ backs)

Please read these instructions before starting to fit the seal Fitting Guide for A: Fabric Back® Endless Seal (eg, endless types M1, M5, M9, Elast-O-Lion® or Ultraglide) Lionsele W3 — double-acting wiper for rods

Check that: GB Check seal, shaft & housing D Die Dichtung, die Welle und das ForSeal Health is in excellent & Safety condition.reasons, shut down Shut Gehäuseoff power kontrollieren theShaft hydraulic has recommended system before lead-in installing chamfer. your NL Controleer de seal, de as en de newShaft wiper. and housing are burr-free. behuizing ES Comprobar el retén, el eje y el alojamiento

Walkersele® fitting techniques Thoroughly clean the housing and GB Clean housing & adjacent shaft. Fitting Guide for ® Checkadjacent the shaft. wiper Wipe and itsthe housing. seal with Ensure a clean CheckWipe housing seal suits the wiper Walkersele Rotary Lip Seals thecloth housing to remove is the any recommended dust that has size. D Das Gehäuse und die Welle collected in storage. säubern. Dichtung säubern A: Fabric Back Endless Seal NL Maak de behuizing en de daarbij Fitting Guide for behorende as schoon. Maak de ® Flex the seal in hands to ensure D:an FittingGB Flex self-retaining seal to equalise tension lip seals seal schoon FittingWalk Guideersele for Rotaryeven Lip distribution Seals of spring tension.(eg, M6D Dichtung & M8) biegen in blind um die Spannunghousing ES Limpiar el alojamiento y la zona ® zu verteilen. NL Buig de seal in de juiste vorm adyacente del eje. Limpiar el retén Walkersele RotaryC3) Flex the Lip seal in handsSeals to C: Metal Band - Self-retaining Seal E S Flexar el retén para distribuir D1) Applyla a smear of oil ensure an even distribution of tensión del muelle or grease toThoroughly the seal lip. clean the housing. Clean the housing spring tension. C: Metal Band - Self-retaining Seal For this use Apply the bearing a smear of oil or grease to the seal GB Lubricate seal lip, spring & shaft lubricant or lip,other seal lubricant OD, spring groove, spring D Dichtungslippe, Feder und Welle When seal is in housing, the spring GB Insert seal into housing compatible housingwith the media and shaft immediately before Fitting Guide for and lip should face the fluid to be D Dichtungbeing ins Gehäuse sealed. einbringen. schmieren ® sealed. When seal is in housing, the spring GNBL DrukInsert de seal seal into in housingde fitting.behuizing For this, use the bearing lubricant, NL Smeer de lip van de seal, de veer WalkImportant:ersele When seal Rotary is in housing, Lip the springSeals and lip Then liberally lubricate and lip should face the fluid to be EDS InsertarDichtung el ins retén Gehäuse enor el otheralojamiento einbringen. lubricant compatible with the en as should face the fluid to be sealed. If joinInsertWhen in sealed.sealmetal is into inband housing, housing. is the spring GB Insert seal into housing tothe 1/3 seal depth OD with soapy and lip should face the fluid to be D Dichtung NinsL GehäuseDruk de einbringen seal in de bis mediabehuizing being sealed. ES Lubricar el labio del retén, el C:visible, Metal insert Band this - Self-retainingarea first. Seal sealed. water. This ensures that InsertIf seal join intoin metal housing. band is visible, insert1/3 der EinbauhöheES Insertar elthe retén outside en diameter el alojamiento muelle y el eje NL Druk de seal met enige inspanning 500mmthis areaOD — first. insert seal evenly into interference becomes When seal is in housing, the spring GB housing to one-third of seal depth.Insert seal intoop housing 1/3 diepte in de behuizing C4) and lip shouldIf facejoin the in fluid metal to be band isD visible,Dichtung insert insES Gehäuse einbringen. evenly distributed, and sealed. Insertar el retén en el alojamiento 1/3Lightly lubricate the wiper and housing Lubricate wiper & housing < 70mmthis areaOD — first. insert sealNL evenly into <70mm OD — insert seal Druk de seal inde de la behuizing profundidad eases the fitting process. Insert sealhousing. into 500mm housing. OD — insert seal intoES Insertar el retén en el alojamiento with the hydraulic fluid prior to assembly. evenly into housing. downwardPush 450mm then seal ease firmly — andin usingloop and inward evenlythe sealpressure. until into D2)it is housing.EnterGB thePush seal seal into evenly the blind until housing housed for as much as the downward and inward pressure. >450mmseated OD — securely loop the at bottom of circumferenceD Die asDichtung possible. gleichmäßig This will leaveins about one-quarter of >seal 450mm into> —housing. the 450mmloop housing. the seal — into loopDo housing. not the seal intothe circumferencehousing.Gehäuse to drücken be manipulated into position. Do not dislodge the spring. NL dislodge the spring. Druk de seal gelijkmatig aan tot Do not dislodge the spring. deze helemaal in de behuizing zit Do not dislodge the spring. ES Empujar el retén uniformemente D3) Loop theDistort last portion wiper in crescent fashion, and Distort & open wiper into position hasta queG encajeB Push the sealPush firmly the and seal evenly firmly until it isand evenlyGB Push untilseal evenly it is until housed Push sealof evenlythe seal until opencircumference housed out into housing cavity with large lip seated securelyseated at bottom securely of housing. at bottomD ofGleichmäßiges housing. Drücken derD Gleichmäßigesinto a crescent Drücken shape. der Then Dichtung ermöglicht Einbau ins of wiper, Push the seal firmly and evenly until it is GB DichtungPush sealusing ermöglicht evenly only until hands, Einbau housed urge insit Fit further seal, if required, repeating steps A1 - A7. Gehäuse GB Fit further seal if required (steps NL Druk de seal gelijkmatig aanD totGleichmäßiges Drücken der seated securely at bottom of housing.A1-A7) Gehäuseinto the housing bore until deze in de behuizing zit NL C5) Push seal firmly and ES Empujar elD reténWeitere uniformemente DichtungenDrukDichtung einbauen,de sealit ermöglicht forms gelijkmatig a circle. Einbau Do aan not ins tot evenly until it is seated hasta que encajewenn erforderlichdezeGehäuse (Schritte in dedislodge A1-A7)behuizing the spring. zit securely at bottom of the wiederholenNESL EmpujarDruk de sealel retén gelijkmatig uniformemente aan tot NL Plaats nog een seal, indien housing. GB Fit further seal if required. (Stepshastadeze in que de encajebehuizing zit Fit further seal, if required, by repeating steps C1 - C7. noodzakelijk (stappen A1-A7) C1-C7) ES Empujar el retén uniformemente D Bauen weitereES Montar Dichtungen retenes ein, adicionales si fuera wenn erforderlichnecesario (Schritte (pasos C1-hasta A1-A7) que encaje D4)C7) Ensure the seal isGB fullyFit seated further in theseal base if required. of the housing (Steps Fit further seal, if required, by repeating steps C1 - C7. NL aroundPlaats nog its een entire seal, indiencircumference. If necessary, press or tap the C1-C7) sealnoodzakelijk evenly (stappen into its C1-C7) final axial position — use only a flat fitting ES Montar retenes adicionalesGD Bsi fueraBauenFit further weitere seal Dichtungenif required. (Stepsein, Fit further seal, if required, by repeating steps C1 - C7. toolnecesario with (pasosrounded C1-C7) edges applied to the outer diameter of the seal. wennC1-C7) erforderlich (Schritte C1- D C7)Bauen weitere Dichtungen ein, D5) Fit a further seal,N ifL required,Plaatswenn erforderlich nogfollowing een stepsseal, (Schritte D1 indien to D4. C1- Ensure that second seal isnoodzakelijkC7) firmly seated (stappen against the C1-C7) first seal. Material Safety Data Sheets are available on request NESL MontarPlaats nog retenes een seal,adicionales indien si fuera James Walker & Co Ltd Customer Support Centre, 1 Millennium Gate, Westmere Drive, Crewe, Cheshire, CW1 6AY, UK Tel: +44 (0)1270 536000 Fax: +44 (0)1270 536100 Email: [email protected] D6) Replace seal housingnecesarionoodzakelijk and bolt up (pasos evenly (stappen untilC1-C7) it C1-C7) is hard Health warning: If PTFE or fluoroelastomer (eg, FKM, FFKM, FEPM) products are heated to elevated temperatures, fumes will be produced which may give unpleasant effects, if inhaled. Whilst some fumes are emitted below 250°C from fluoroelastomers or below 300°C from PTFE, the effect at these temperatures is negligible. Care should be takenagainst to avoid contaminating the bearing tobacco with housing particlesMontar of face. retenes adicionales si fuera PTFE or fluoroelastomer, or with PTFE dispersion, which may remain on hands or clothing. ES Information in this publication and otherwise supplied to users is based on our general experience and is given in good faith, but because of factors which are outside our knowledge and control necesarioand (pasos C1-C7) affect the use of products, no warranty is given or is to be implied with respect to such information. Unless governed by type approval or contract, specifications are subject to change without notice. Statements of operating limits quoted in this publication are not an indication that these values can be applied simultaneously. To ensure you are working with the very latest product specifications, please consult the relevant section of the James Walker website: www.jameswalker.biz. CPC Level 22 Layout 22 AM07 T01 301011

C6) Fit further seal, if required, following steps C1 to C5. Material Safety Data Sheets are available on request James Walker & Co Ltd Customer Support Centre, 1 Millennium Gate, Westmere Drive, Crewe, Cheshire, CW1 6AY, UK MaterialTel: +44 (0)1270 Safety 536000 Data SheetsFax: +44 (0)1270are available 536100 Email:on request [email protected] Health warning:38 If PTFE or fluoroelastomerTo order or (eg, get FKM, further FFKM, details,FEPM) products call areyour heated local to elevated contact temperatures, shown onfumes rear will becover produced or listedwhich may at give www.jameswalker.biz unpleasant effects, if inhaled. Whilst some fumesJames are Walker emitted &below Co Ltd250°C Customer from fluoroelastomers Support Centre, or below 130 Millennium0°C from PTFE, Gat thee, effect Westmere at these Drive,temperatures Crewe, is negligible. Cheshire, Care CW1 should 6AY be, UK taken to avoid contaminating tobacco with particles of PTFETel: or+44 fluoroelastomer, (0)1270 536000 or with Fax:PTFE+44 dispersion, (0)1270 which 536100 may rem Email:ain on [email protected] or clothing. InformationHealth warning in this: If publicationPTFE or fluoroelastomer and otherwise (eg, supplied FKM, toFFKM, users FEPM) is based products on our aregeneral heated experience to elevated and temperatures, is given in good fumes faith, will but be because produced of which factors may which give are unpleasant outside our effects, knowledge if inhaled. and Whilstcontrol some and affectfumes the are use emitted of products, below 250°C no warranty from fluoroelastomers is given or is to orbe below implied 30 with0°C fromrespect PTFE, to such the effect information. at these Unless temperatures governed is bynegligible. type approval Care should or contract, be taken specifications to avoid contaminating are subject to tobacco change with without partic notice.les of StatementsPTFE or fluoroelastomer, of operating limits or with quoted PTFE in dispersion, this publication which are may n otrem anain indication on hands that or theseclothing. values can be applied simultaneously. ToInformation ensure you in this are publication working with and theotherwise very latest supplied product to users specific is basedations, on pleaseour general consult experience the relevant and is section given in of good the James faith, but Walker because website: of factors www which.jameswalker.biz. are outside our knowledge and control and affect the use of products, no warranty is given or is to be implied with respect to such information. Unless governed by type approval or contract, specifications are subject to change without notice. Statements of operating limits quoted in this publication are not an indication that these values can be applied simultaneously. CPC Level 22 Layout 22 AM07 T01 301011 To ensure you are working with the very latest product specifications, please consult the relevant section of the James Walker website: www.jameswalker.biz. CPC Level 22 Layout 22 AM07 T01 301011 Operational considerations

Multi-seal configurations Seal lubrication

In the vast majority of Walkersele® applications a single seal will The sealing lip of a Walkersele® will usually have adequate provide the level of protection required. lubrication for long-life operation when: • A single seal is fitted to retain lubricant within a bearing On occasions, however, two or more seals in various assembly. configurations are necessary to ensure long-term protection • Two seals are housed together, with bearing lubricant acting on

Product range : Date : Sketch reference : underJAMES WALKER particularly S.P.S. Ltd. arduousWalkesele ; Rotary operating Seals Leaflet 16-01-2012conditions.Page 38 - Issue 44, P13 The following one and, typically, rolling fluid or coolant acting on the other. Marcoms Department M1 D6 Back to back with lantern ring - Lubrication are a few examples: M1 D6 Back to back with lantern ring Back-to-back However, when more than two seals — and sometimes only configuration for two, on arduous duties — are housed together, the danger two-way sealing. exists that one or more will run dry unless lubricated from an Used to prevent exterior source. To accomplish this: loss of bearing • Ensure that the housing arrangement allows lubricant to pass lubricant and through freely to the position where the seals meet. also prevent • Install standard Walkerseles with an inter-seal lantern ring/s ingress of external between them that is ported to allow lubricant access to the contaminants. inter-seal shaft area and the seal lips (see diagram below). Product range : Date : Sketch reference : JAMES WALKER S.P.S. Ltd. Walkesele ; Rotary Seals Leaflet 17-01-2012 Page 38 - Issue 44 - P13 Product range : Date : Sketch reference : JAMESWe WALKER can S.P.S.supply Ltd. suitableWalkesele ; Rotarylantern Seals Leaflet rings16-01-2012 in Pagemetal 38 - Issue 44, P13 or plastic: Marcoms Department M1 D7 In-line with lantern ring - Lubrication Marcomsplease Department contact our TechnicalM1 D6 In-line with Support lantern ring - Lubrication Team. M1/D7 In-line with lantern ring Inward-facing M1 D6 In-line with lantern ring series configuration for extra protection. Typically used to Standard seals prevent bearing with lantern ring lubricant reaching (preferred option a product where for inter-seal contamination is lubrication). not permitted. Product range : Date : Sketch reference : JAMES WALKER S.P.S. Ltd. Walkesele ; Rotary Seals Leaflet 16-01-2012 Page 38 - Issue 44, P13 Marcoms Department M1/D6 with Ports and groove - In-line - Outward - Lubrication

M1 D6 with Ports and groove - In-line - Outward Outward-facing Where there is insufficient axial space to incorporate a series configuration lantern ring: for extra protection. • Machine an annular groove in the back of the housing to Typically used to connect with the drilled lubricant hole. prevent aggressive • Fit Walkerseles that have radial ports in the base (available to media reaching order) that allow lubricant to pass to the lip (see diagram below). the bearings. • When it is impractical to machine an annular groove in the Where the seal housing, the groove can be incorporated in the seal backs retaining plate is (available to order). For this the seal section must be a on the sealed fluid minimum of 12.5mm (½ inch) in width. side − eg, marine • In both these cases, please discuss your applications with

Product range : Date : Sketch reference : stabilisers − we recommend the application of a suitable flange JAMESour WALKER Technical S.P.S. Ltd. SupportWalkesele ; RotaryTeam Seals Leaflet before16-01-2012 metalPage 29 - Issue 44,cutting. P13 We may be sealant between the faces of the retaining plate and housing. Marcomsable Departmentto suggest a betterM1 D6 with Ports alternative. and groove - In-line - Intward - Lubrication M1 D6 with Ports and groove - In-line - Inward Please note that Walkersele D7 and D8 seals need heel support, even in the back-to-back configuration. Housing with annular groove, We recommend you discuss multi-seal configurations with our plus seals with Technical Support Team to determine the optimum sealing radial ports. system for your application.

Excessive pressure behind a Walkersele A Walkersele works efficiently when the lip and spring face the direction to be sealed. But any excessive fluid pressure applied behind the seal — eg, when injecting lubricant through a lantern ring — can cause the pressurised fluid to pass beneath the seal lip towards the media to be sealed.

To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz 39 Operational considerations

Product range Product: range : Date : DateSketch : referenceSketch : reference : JAMESJAMES WALKER WALKER S.P.S. Ltd.S.P.S. Ltd. Walkesele ; RotaryWalkesele Seals ; LeafletRotary Seals Leaflet 15-12-2011 15-12-2011Wsele - Page 30Wsele - Page 30 Eccentricity limits MarcomsLipMarcoms support Department Department plates WalkerseleWalkersele D6 - Lip support D6 - Lip plates support plates

A worn or misaligned shaft/bearing assembly requires lip seals A lip support plate is typically used with a Walkersele® D6 profile that can ‘follow’ the shaft by the amount it is offset. Retainingto increaseRetaining plate the pressure platewith with differential ratingRetaining toRetaining 200kPa/2bar plate platewith (29psi). with integralintegral lip support lip support separateseparate lip support lip support The highly flexible lips of many Walkersele® material/design combinations will cater for certain levels of eccentricity, dependent on seal diameter and shaft surface speed.

The following eccentricity graphs apply only to ‘endless’ Walkerseles and Walkersele OSJ-2 applications (see pages 22 - 23) as split-type seals may tend to open at the abutted join when shaft offset is severe. Please discuss with our Technical Support Team any applications that involve known eccentricity: also note that modified retaining plates and/or lip support plates may be needed.

Limits of eccentricity: endless M1/D6 Walkersele® Retaining plate with Retaining plate with integral lip support separate lip support

Nominal seal Diameter This arrangement is sometimes preferred over a Walkersele D7 section mm range mm profile — rated at 400kPa/4bar (58psi) — when: A 10 x 11 Up to 35 • The lower lip loading of the D6 profile is required. B 11 x 12.5 35 to 65 C 12.5 x 16 65 to 100 • The normal operating pressure and other conditions are within D 16 x 20 100 to 250 the limits for a D6, but the seal has to cater for periods when the E 20 x 22 250 to 400 pressure can increase up to 200kPa/2bar (29psi). F 22 X 25 400 to 600 • Housing space is not limited, allowing both the Walkersele G 25 X 32 600 to 1200 D6 plus lip support plate to be accommodated. • There is no danger that any eccentricity will permit the lip support plate to make contact with the shaft.

Lip support plates are supplied to order. Our preferred materials are phosphor bronze, brass, aluminium, mild steel, and stainless steel.

Limits of eccentricity: endless M1/D7 Walkersele® Shaft features — general requirements

For long service life with a Walkersele®, the shaft area beneath Nominal seal Diameter the seal lip should offer the following: section mm range mm A 12.5 x 16 Up to 100 • Sufficient surface hardness to resist wear. B 16 x 20 100 to 250 • Surface texture that does not abrade the seal lip. C 20 x 22 250 to 400 • Surface finish that will support a lubricant film — typically oil, D 22 x 25 400 to 600 or an oil/water emulsion or mixture in marine applications. E 25 x 32 600 to 1200 • Stable surface structure: eg, if coated, an adequate thickness of non-porous coating that is correctly applied, on a substrate that can support the dynamic working conditions. • Thermal conductivity to dissipate heat away from seal lip.

40 To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz Operational considerations

Shaft surfaces Housing surfaces

The sealing area of a shaft should have a fine ground finish A fine machined finish, free of dents and scratches, is of 0.2 to 0.8µm Ra (8 - 32µ inch CLA) for the majority of recommended for the housing bore. Walkersele® applications. All Walkerseles now have elastomeric or elastomer-proofed Where higher speeds are involved — ie, in excess of 8m/s fabric backs and are very unlikely to damage the housings (1575fpm) — we recommend an improved finish of 0.2 to during installation, operation or removal. Metal cased seals, 0.4µm Ra (8 - 16µ inch CLA). however, can present problems that possibly lead to housing damage during installation and/or removal when the fit is tight. In all cases, the shaft sealing area must be plunge ground and free from machining marks, dents, burrs, scratches and single- The elastomeric back of a Walkersele® presents an efficient pass grinding witness patterns. sealing surface to the housing that prevents the by-pass of bearing lubricant or external fluid media. Walkerseles are Providing that lubrication is adequate and free from abrasive designed to be a compression fit in their housings; therefore content, unhardened mild steel shafts will generally give circumferential compression on the outside of the seal, or satisfactory results under normal operating conditions. axial compression on the depth of the seal for retained units, However, a harder shaft material is recommended for provides for complete fluid sealing around the back. applications where lubrication is poor, abrasives are present, or speed and pressure conditions are arduous. The flexibility of Walkersele backs also gives them greater tolerance to slight housing imperfections — eg, ovality, damage and wear — than is possible with a metal cased seal. Shaft hardness

A shaft hardness of 40-50 HRC (Rockwell C) is generally Walkersele® storage acceptable for long-term Walkersele® operation. However, where shaft wear has to be kept to the absolute minimum Like other precision manufactured fluid seals, Walkerseles — particularly with high speed, abrasive or pressurised should be stored in a cool, dark and dry place. They should be applications — a minimum shaft hardness of 60 HRC is laid flat — NOT tied together with string or wire, or suspended recommended. from hooks, as this can impair the sealing efficiency of their lips.

When necessary, we recommend that nitrogen case hardening Please refer to BS ISO 2230 Rubber products — Guidelines for (nitriding) treatment be applied to certain types of steel shaft storage. or shaft sleeve to provide about 0.5mm (0.02 inch) depth of hardened surface to around 1100 VPN (68 HRC).

Other methods of hardening the shaft surface include the application of thin dense chrome or tungsten carbide. For specific recommendations please contact our Technical Support Team.

Ceramic shafts

Albeit tough and resilient, ceramic shafts are usually abrasive and thermally insulating: as such, they should be avoided where possible. If they cannot be avoided, then the higher temperature grades of Walkersele® material, or those with better heat dissipation qualities, should be used.

Please consult our Technical Support Team for recommendations on such applications.

To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz 41 Other rotary seal types

In addition to our Walkersele® range of lip seals, we also supply Metal cased lip seals other types of well-proven seal for rotary shaft applications. We supply a range of competitively priced seals to suit End face seals or V-rings housings to ISO 6194 in over 500 combinations of design and size, in standard materials. These flexible lip seals fit on a shaft and seal axially against a counter face — such as a roller bearing face, shaft collar or thrust washer.

V-ring Type 41

V-ring Type 78

V-ring Type 99 Materials These seals are supplied with nitrile (NBR) lips as standard, with other elastomers available to suit specific working conditions. The cases and spring materials are supplied in carbon steel as standard, with stainless steel available on Special features request. • Well-proven designs. • Reliable sealing against splash grease, oil and water, as well Availability as dust and dirt. All standard sizes and designs are readily supplied. Please • Low friction running. contact us before placing your order, especially if non-standard • No running-in period required. types are required.

Availability Standard seals: All sizes and designs of V-ring are readily available in commercial grades of elastomer; the standard grade being nitrile (NBR) of 70 IRHD (70 Shore A).

Non-standard seals: End face seals/V-rings to non-standard sizes, or in high performance elastomers to match specific duties, are in-house manufactured to order.

Please contact us to check mould availability. Where we have a suitable tool, your seal will be supplied on short delivery time without tooling charges. New tools are swiftly made; in these cases a tooling charge will be applied.

42 To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz James Walker in action

Customer support at every level If we do not stock the Walkerseles you need, we can supply them within days — rather than weeks. This we achieve by When you select Walkersele®, or any of our sealing products, compounding our elastomers in-house, and operating flexible you immediately get the full expertise of James Walker on your manufacturing systems at our production plants. side — wherever you may be in the world. When necessary, production time-scales can be reduced to We aim to supply you with the very best just hours to help you bring a process line back into operation, • Customer service or enable a ship to continue its journey. • Technical support • Fluid sealing products In addition, our Walkersele field engineers can bring the seals • Delivery with them to help your maintenance staff fit them correctly. This • After sales service. is particularly valuable when a Walkersele OSJ-2 is fitted and On-Site Joined for the first time by your own engineers. Our Customer Support Centre leads the industry with its high technology service to many thousands of customers worldwide. Production facilities On-site technical advice comes from our highly experienced Our manufacturing plants for elastomeric seals are located in field engineers and industry sector specialists — backed by the UK, USA and Australia. These, together with other global the materials technologists, chemists, R&D engineers and test production facilities, ensure that we provide customers with top laboratory staff at James Walker Technology Centre. Together, quality engineered solutions for their sealing problems. they have the knowledge and technical facilities to solve virtually any fluid sealing problem for our customers. In-house facilities include: User training is another important service we provide. Our • Compression moulding to 2.2m (87 inch) diameter in a single specialists regularly host sessions to instruct plant engineers operation, with one of Europe’s biggest precision presses. and designers in the selection and installation of our products. • Compression vacuum moulding to 2.1m (83 inch) diameter in a single operation. • Continuity moulding with no joins, to unlimited diameters, for a selection of profiles. Worldwide network & supply • Special mould-joining technique for producing elastomeric components to unlimited diameters. An integrated network of James Walker companies and official • Injection moulding to 500mm (19.7 inch) diameter. distributors covers over 100 countries. This is supported by a • Transfer moulding. secure web-based and highly developed logistics operation • CNC centres for machining elastomers, engineering plastics, to give you surety of supply for your JIT regimes, normal metal components and mould tools. maintenance schedules, and emergency breakdowns. • Batch compounding of over 300 elastomer grades, with interlocked energy, time and temperature control for QA Our automated warehouse holds over 200,000 types and sizes traceability. of different sealing products, ready for same-day despatch.

To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz 43 MainJames Page Walker or Subject in action HeadingMain Page or Subject Heading

Quality standards Research & development

Our quality standards are third-party registered to ISO 9001 Our materials and product development programmes have and AS/EN 9100. We are also certified to OHSAS 18001 continued unceasingly since the 1880s. They started when and ISO 14001. In addition, we are regularly assessed our founder, Scottish engineer James Walker, perfected an and quality approved by a wide range of industry bodies innovative steam packing that proved vital to the success of the including multinational corporations, utilities and government high-efficiency steam engines that powered mankind into the organisations. 20th century.

We hold test equipment for all relevant ISO, BS, ASA, API, Today, our technologists and laboratory staff deliver new ANSI, DIN, DTD and NATO standards. Certificates of conformity materials, products and manufacturing techniques to improve are supplied on request, and a BS ISO 2230 compliant package the sealing efficiency of existing industrial plant and equipment is offered as standard, providing data on inspection, recording — and meet the demands of tomorrow’s systems that are still procedures and storage of products made from vulcanised and at the conceptual stage. thermoplastic rubber. The objectives of our R&D activities are to provide industry with We always select the best raw materials for each product, and fluid sealing systems that offer: use advanced manufacturing techniques with strict quality • Longer maintenance-free operating life. control and traceability at every stage — regardless of any • Faster and easier installation, to reduce plant downtime. release certification requirements. Our manufacturing process • Improved sealing integrity. culminates in an exacting inspection procedure for the finished • Ability to work at higher speeds, greater pressures, and product. Stockholding and distribution facilities meet similar extremes of temperature. exacting standards. • Greater resistance to chemical attack and abrasive wear. • Energy savings, through reduced break-out and dynamic In addition to our in-house test laboratories that verify our friction. materials and products, we regularly commission independent test houses across the world for third-party certification to Features such as our Walkersele® OSJ-2, Ultraglide, international, national and industry standards, Supaglide, Millglide, Walkersele Aflas®, Walkersele® D8 design, Walkersele® cartridges, and a multitude of custom-designed Material Safety Data Sheets (MSDS) relating to all our products products, prove the success of our programmes for rotary lip are available on request. seals in recent years.

We also work on joint venture research programmes with other organisations in the European Sealing Association — of which we are a founder member — and sponsor high-level research in partnership with research institutes and leading users of sealing technology.

44 To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz MainIndustry-wide Page or Subject applications Heading

Walkersele® applications

Our range of Walkersele® radial lip seals has earned an enviable reputation worldwide for sealing efficiency and long maintenance-free operation.

Here is a selection of the many sectors where plant and equipment operators rely on Walkersele’s ability to keep the wheels of industry turning safely and reliably — year-in and year-out. Photo courtesy of Siemens VAI

Metallurgical sector Marine Food & pharmaceuticals • AGC capsules • Bow thrusters • Conveyors • Casters • Bulkhead seals • Cutters • Coating lines • Crane drums • Grinders Cold mills • • Dredging plant • Mixers. • Coil boxes & down coilers • Gearboxes & transmission systems • Coilers & reelers • Power plant Construction • Extrusion presses • Rudder posts • Tunnel boring machines. • Finishing mills • Shaft bearings • Forging presses • SRP swivel joints & shafts • Hot rolling mills • Stabilisers Land transport • Overhead cranes — gearboxes • Stern glands. • Rail traction systems. • Plate mills • Strip mills Processing sector Manufacturing industry • Temper mills • Centrifuges • Machine tools. • Universal mills — scale breakers, • Chemical pulping lines roughers, edgers, billet, bloom & slab. • Dry cleaning machines Water industry Extractor drums • • Filter beds. Mineral extraction & processing • Mixing vessels. • Cement mills • Conveyors Pulp & paper mills • Drag lines • Calenders • Mixers & grinders • Chippers • Rock crushers • Debarkers • Rotary kilns • Digesters • Winding gear. • Dryers • Felt rolls Power generation • Head boxes • Coal pulverisers & ball mills • Press rolls • Diesel plant • Screening • Generator sets • Section rolls • Hydroelectric plant — water turbines • Washers. & dam gate bearings • Steam turbines • Wind turbines.

To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz 45 Information

Alphabetical index of products & materials

Page Page

Aflas® — tetrafluoroethylene-propylene (FEPM) 14 Walkersele® Cartridges 24

Customised designs 19-20 Walkersele® D1 — original design 17

End face seals or V-rings 42 Walkersele® D4 — for slow rotary duties 17

Endless-type Walkerseles 27 Walkersele® D5 — compact design 17

M1 — NBR material 12 Walkersele® D6 — most popular design 15

M5 — IIR material 12 Walkersele® D7 — pressure resistant 16

M6 — NBR material 12 Walkersele® D8 — for marine propulsion and processing 16

M8 — FKM material 12 Walkersele® Long Lip 26

M9 — FKM material 12 Walkersele® M1/D6 standard range — inch & metric 28-29

M11 — NBR material for marine and power train duties 12 Walkersele® M6/D6 standard range — inch & metric 30-32

M12 — NBR material 13 Walkersele® OSJ-2 for On-Site Joining 22-23

M13 — NBR material 13 Walkersele® Shaft Sleeves 24

M22 — HNBR material for wind turbines 13 Walkersele® Shallowback designs 26

Metal cased lip seals 42 Walkersele® SpringCover 25

Millglide — HNBR material for rolling mills 13 Walkersele® SpringSafe 25

Spacer rings 24 Walkersele® TBMS — for tunnel boring machines 18

Split-type Walkerseles 27 Walkersele® with Dust Lip 25

Supaglide — HNBR material for rolling mills 13 Walkersele® with Ports & Grooves 26 Ultraglide — optimised HNBR material for long life 14

Trademark acknowledgements James Walker acknowledges the following trademarks as mentioned in this document. All other names bearing the ® symbol are registered trademarks of James Walker.

Aflas® Asahi Glass Inconel® Special Metals Corporation

General information

Health warning: If PTFE or fluoroelastomer (eg, FKM, FFKM, FEPM) products are heated to elevated temperatures, fumes will be produced which may give unpleasant effects, if inhaled. Whilst some fumes are emitted below 250°C from fluoroelastomers or below 300°C from PTFE, the effect at these temperatures is negligible. Care should be taken to avoid contaminating tobacco with particles of PTFE or fluoroelastomer, or with PTFE dispersion, which may remain on hands or clothing. Safety Data Sheets (SDS) are available on request.

Information in this publication and otherwise supplied to users is based on our general experience and is given in good faith, but because of factors which are outside our knowledge and control and affect the use of products, no warranty is given or is to be implied with respect to such information. Unless governed by type approval or contract, specifications are subject to change without notice. Statements of operating limits quoted in this publication are not an indication that these values can be applied simultaneously.

To ensure you are working with the very latest product specifications, please consult the relevant section of the James Walker website: www.jameswalker.biz.

Environmental statement: This brochure is manufactured using advanced environmentally friendly technologies and follows the strict environmental standard BS EN ISO 14001. Made from chlorine-free pulp (ECF) with post-consumer recycled fibre obtained from sustainable wood forests, and printed using vegetable-based inks, by Binfield Printers Ltd. For those who wish to reduce further their impact on the environment, this publication is also available as a PDF from: www.jameswalker.biz.

46 To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz Main Page or TechnicalSubject Heading guides

These guides give detailed technical information on the products and services covered in this publication. Please ask for your printed copies, or visit our website www.jameswalker.biz where they can be downloaded in pdf form.

Hydraulic Sealing Guide ‘O’ Ring Guide Compression Packings Guide Gaskets & Jointings Guide Issue 28.3 Issue 7 Issue 9 Issue 7

• Rod/gland seals The comprehensive guide to ‘O’ ring The comprehensive guide to compression packings for James Walker’s comprehensive • Piston seals sealing systems including • Pumps • Wipers & scrapers • Valves guide to quality gasket products • ‘O’ ring selection • Bearing strips • Hatch lids for industry worldwide • ‘O’ rings • General & high performance materials • Crucible lids • Housing design & tolerances • Furnace doors • Cords, kits & lubricants • Gland sealing duties

High Performance Sealing Technology High Performance Sealing Technology High Performance Sealing Technology High Performance Sealing Technology

52452 Gaskets & Jointings Guide 7.indd 1 25/09/2012 16:19 Hydraulic seals ‘O’ Rings Compression packings Gasket & jointings

assuring bolted joint integrity

POWER GENERATION Engineered seals in PTFE & Elastomer Engineering Guide high-performance plastics Issue 2 Designed & produced by

• Seals & sealing systems from James Walker JaegerSeals designbrand OIL & GAS

• High performance products

ltd T el:

• With full worldwide technical support 0845

0559216

ww w .designbrand.co.uk

CHEMICAL PROCESSING

TRANSPORT

High Performance Sealing Technology

PTFE & thermoplastic seals Elastomer engineering Expansion joints & bellows RotaBolt® tension control

High Performance Sealing for all Sealing Guide for the Iron & Steel Industry Sealing Guide for Conventional Sealing in the Nuclear Power sector Issue 3 Marine Applications Issue 34 Thermal Power Generation Issue 2 Issue 1

Global supply of • World class materials & sealing products ● Best-value fluid seals & gaskets • Custom designed & manufactured ● Standard & custom-designed products • Fully researched, developed & tested ● Bolting technology • With nuclear standards & certifications ● Vibration damping & control • Global support to OEMs, contractors & utilities

Global supply of Global supply of: • Best-value fluid seals & gaskets • Gaskets & jointings • Standard & custom-designed products • Packings & tank lid seals • Expansion joints & bellows • Expansion joints & bellows • Bolting technology • Rotary & hydraulic seals • Vibration damping & control • Pipe supports & much more…

High Performance Sealing Technology High Performance Sealing Technology High Performance Sealing Technology High Performance Sealing Technology

Iron & steel industry guide Marine industry Conventional power generation Nuclear power generation

To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz 47 James Walker worldwide support & distribution

James Walker Asia Pacific James Walker Deutschland James Walker Mfg (USA) Tel: +65 6267 4788 Tel: +49 (0)40 386 0810 Tel: +1 708 754 4020 Fax: +65 6267 4980 Fax: +49 (0)40 389 3230 Fax: +1 708 754 4058 Email: [email protected] Email: [email protected] Email: [email protected]

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