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Brochure Mechanical Seal Technology and Selection

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Brochure Mechanical Seal Technology and Selection Mechanical seal technology and selection Technical information Seal selection by media Content and other brochures Technical information Mechanical seal selection by media Additional information Index . .5 Index . 23 TotalSealCare . .Outside back cover Media tables . .Inside back cover Short legend . .Fold-out page at back cover Company profile . .2 Additional product lines . .50 EagleBurgmann – Your System Supplier Mechanical seals, Magnetic couplings Important note Separately available brochures offer information Catalog 150 pages (Code: DMS_MSE) about additional product lines as well as notes on the All the technical specifi cations are based on extensive technology and selection of mechanical seals. tests and our many years of experience. However, the The complete range of seals from EagleBurgmann: diversity of possible applications means that they can All products can be retrieved interactively from serve as guide values only. eagleburgmann.com. Among others, you will find Pump seals, agitator seals, compressor seals, and current data sheets in PDF format available for magnetic couplings. It should be noted that the extremal values of each download here. operating parameter cannot be applied at the same time because of their interaction. Furthermore, the operating range of each specifi c product depends on the respective shaft diameter, materials used, mode of operation and on the medium to be sealed. A guarantee can only be given in the individual case if the exact conditions of application are known and these are confi rmed in a special agreement. When critical Seal supply systems Carbon floating ring seals conditions of operation are involved, we recommend consulting with our specialist engineers. Brochure 32 Pages (Code: EBES) Brochure 84 Pages (Code: DMS_SSE) Subject to change. Maintenance-free, compact cartridge labyrinth seals with The entire product portfolio of systems and components long service life and best performance from for the cooling, flushing, pressurization and supplying of EagleBurgmann-Espey. For the sealing of gases, dust and liquid and gas-lubricated mechanical seals, e.g. quench vapors in turbines, fans, compressors, centrifuges and and Thermosiphon systems, heat exchangers, buffer mills. pressure systems, leakage monitoring and API682-compliant supply systems. 1 Data Sheet Headline 2 Our products – as varied as our customers EagleBurgmann products deliver safe, reliable sealing The EagleBurgmann portfolio: performance in any application including oil pumping and A product range with an unlimited horizon. cracking, gas compression, process gas containment, EagleBurgmann is one of the world’s leading phase separation or synthesis of chemical substances, manufacturer of industrial sealing solutions. Our pipeline sealing, dairy product fi lling or compensation extensive portfolio includes everything from standard of temperature expansion in fl ue gas systems. seals to one-off application-specifi c designs: Our challenge is to design seals that are able to • Mechanical seals withstand a wide range of media, diff erent aggregate • Magnetic couplings states and varying pressure and temperature and to • Seal supply systems provide special solutions for small installation up to seal • Carbon floating ring seals contact areas of several meters. Every application has its • Compression packings own special requirements profi le, and our job is to • Gaskets provide the best sealing solution. • Expansion joints • Special products • TotalSealCare Services Total commitment to quality excellence. Outstanding quality is the top priority at EagleBurgmann. Our products are designed for user-friendly installation, optimal functionality and long service life. Our R&D activities, advanced quality management system, in-house test facilities and in-depth engineering expertise ensure that our seals meet the most demanding customer expectations. Starting right back in the development phase, our employees continually verify the quality of our products, and we carry out systematic inspection and testing to guarantee that customers are getting top quality. Proud of the trust which our customers place in us. EagleBurgmann is a dependable, competent partner. Our customers are always in total control of the media in their pumps, agitators, compressors, blowers, turbines, valves and pipeline systems even when operating conditions are extremely harsh. There is good reason why customers in the oil & gas, refi nery, chemical, energy, food processing, paper, water, marine, aerospace, mining and other industries choose EagleBurgmann as their sealing solutions supplier. 3 4 Technical information In this brochure we collected some important Additional options for agitator seals . 7 and interesting technical information about the Axial run-out . 16 mechanical seals section. You can find – besides Balance ratio . 8 technical basic information – notes on design, Barrier medium . 17 installation and operation and also useful theoretical Circulation Systems to API 682 . 18 articles. In case of any queries, please do not hesitate Coatings for sliding faces . 11 to contact us. Code system for agitator seals . 7 Code system for API 682 seals . 21 Code system for mechanical seals . 7 Coefficient of friction . 8 Concentricity tolerance . 15 Conical spring . 15 Cooling water requirements . 9 DiamondFace . 11 Gap width . 8 Gas-lubricated seals principle . 13 Heat transfer . 9 Leakage rate . 11 Load factor . 8 Mechanical seal installation . 16 O-Ring extrusion characteristics . 13 Power consumption . 10 Pressure vessel regulations . 17 Prior to installation . 15 Pumping screws . 14 Screw locking . 16 Seal supply systems . 17 Seat locking to EN 12756 . 12 Shrink disk . 15 Sliding pressure . 8 Sliding velocity . 9 Super-Sinus spring . 15 Surface finish. 16 Surface roughness . 9 Symbols . 6 TTV O-Rings . 13 Turbulence losses . 9 Types of drive . 15 Vapor curves . 12 Table of materials and material codes: fold-out page at back cover. 5 Technical information Symbols Mechanical seals according to EN 12756 (code system) A Area of sliding face For single mechanical seals there is a distinction drawn between standard (N) and short (K) types. For double AH Area hydraulically loaded by medium pressure mechanical seals (back-to-back) EN specifies the short type only. b Width of sliding face c Specific heat capacity D Outer diameter of sliding face Single seal d Inner diameter of sliding face Designation Description Position 1 2 3 4 5 Da Outer diameter of bellows dH Hydraulic diameter D Inner diameter of bellows i Spring N = standard type with l1N dm Mean diameter of sliding face K = short type with l1K Seal face (C = type C)* D seat Stationary Diameter of shaft w Secondary seals f Coefficient of friction U = no shaft step B = with shaft step Ff Spring force h Gap width (C = 0)* H Delivery head of pumping screw Nominal diameters d1 and d10 of the mechanical seal Shaft/shaft sleeve diameters are always three-digit numbers k Balance ration beneath the stationary seat for types U and B k1 Pressure gradient factor n Speed Direction of rotation of the mechanical seal Type N and K (Type C)* p1 Medium pressure (is also the spring winding direction) Other metal parts (except seal cover and shaft sleeve) p2 Atmosphere pressure R = clockwise Looking from the stationary seat toward the seal face Looking from the drive side with the shaft p3 Buffer fluid pressure with the seal face rotating in clockwise direction rotating in clockwise direction Δp p1–p2; p3–p1; p3–p2 L = anti clockwise pf Spring pressure Looking from the stationary seat toward the seal face Looking from the drive side with the shaft pG Sliding pressure with the seal face rotating in anticlockwise direction rotating in anticlockwise direction pr Calculated load for the frictional force of the S = independent of direction of rotation secondary seal Spring type (state single spring or multiple springs in your order) PR Power consumption of sliding faces P Turbulence loss through rotating parts Finned stationary seat · V 0 = no torsion lock, without anti-rotation pin V Delivery rate 1 = with torsion lock, with anti-rotation pin Q Mechanical seal leakage rate (2 = for type C)* Ra Mean roughness index (calculated) Materials (see inside end cover of manual for the material code) t,T Temperature of the medium to be sealed ΔT Rise in temperature of the medium to be sealed t3 Temperature of the buffer medium Double seal vg Sliding velocity Designation Description Position 1 2 3 4 5 1 2 3 h Dynamic viscosity k Load factor r Density U = no shaft step Spring n Kinematic viscosity B = with shaft step on product side (C = type C)* } Other metal parts Seal face inboard U = no shaft step Sliding face outboard Stationary seat inboard seat Stationary Stationary seat outboard seat Stationary B = with shaft step on atmosphere side Secondary seals inboard Secondary seals outboard (C = type C)* } Nominal diameters d1 and d10 (always three-digit numbers) Direction of rotation (see single seal) Anti-rotation pin for stationary seat on the atmosphere and/or product side 0 = without anti-rotation pin 1 = with anti-rotation pin for stationary seat on atmospheare side 2 = with anti-rotation pin for stationary seat on product side 3 = with anti-rotation pin for stationary seat on the atmospheare and product sides (4 = for type C)* Positive retention for stationary seat on the product side 0 = without D = with (E = for type C)* Materials (see inside end cover) * DIN 24960 6 Code system for agitator seals to DIN . – . / dw – . Type Customer specification M Seccomix AGSZ Shaft diameter Range (M45 … 56) Additional options 0 – basic design 1 – leakage drain Features1) 2 – cooling flange K = internally balanced 4 – leakage drain + cooling flange (pressure from the inside) L = with bearing F = pumping screw Drive U = for bottom entry 1 – set screw 2 – shrink disk 3 – clamping collar Type 4 – key D = double seal 5 – flange (shaft sleeve) 6 – shaft sleeve with flange and key 1) If more than one feature apply, the code 7 – clamping set letters are listed one after the other. 8 – muff coupling N.B.: The code system published in DIN 9 – customer-specification 28138 Part 3 can also be used to describe and order DIN agitator seals.
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