TR ELLEBORG SEALING SOLUTIONS O-Rings and Back-up Rings O-Rings and Back-up Rings YOUR PARTNER FOR seaLING TECHNOLOGY Your Partner for Sealing Technology Trelleborg Sealing Solutions is a major international developer, proprietary compounds and a range of unique products. manufacturer and supplier of seals, bearings and molded Trelleborg Sealing Solutions fulfills challenging service components in polymers. We are uniquely placed to offer requirements, supplying standard parts in volume or a single dedicated design and development from our market-leading custom-manufactured component, through our integrated product and material portfolio: a one-stop-shop providing the logistical support, which effectively delivers over 40,000 sealing best in elastomer, silicone, thermoplastic, PTFE and composite products to customers worldwide. technologies for applications in aerospace, industrial and automotive industries. Facilities are certified to ISO 9001:2008 and ISO/TS 16949:2009. Trelleborg Sealing Solutions is backed by the experience With 50 years of experience, Trelleborg Sealing Solutions engineers and resources of Trelleborg Group, one of the world’s foremost support customers with design, prototyping, production, test and experts in polymer technology. installation using state-of-the-art design tools. An international network of over 70 facilities worldwide includes over 20 manu- facturing sites, strategically-positioned research and development centers, including materials and development laboratories and ISO 9001:2008 ISO/TS 16949:2009 locations specializing in design and applications. Developing and formulating materials in-house, we utilize the resource of our material database, including over 2,000 The information in this brochure is intended to be for general reference purposes only and is not intended to be a specific recommendation for any individual application. The application limits for pressure, temperature, speed and media given are maximum values determined in laboratory conditions. In application, due to the interaction of operating parameters, maximum values may not be achieved. It is vital therefore, that customers satisfy themselves as to the suitability of product and material for each of their individual applications. Any reliance on information is therefore at the user‘s own risk. In no event will Trelleborg Sealing Solutions be liable for any loss, damage, claim or expense directly or indirectly arising or resulting from the use of any information provided in this brochure. While every effort is made to ensure the accuracy of information contained herewith, Trelleborg Sealing Solutions cannot warrant the accuracy or completeness of information. To obtain the best recommendation for a specific application, please contact your local Trelleborg Sealing Solutions marketing company. This edition supersedes all previous brochures. This brochure or any part of it may not be reproduced without permission. ® All trademarks are the property of Trelleborg Group. The turquoise color is a registered trademark of Trelleborg Group. © 2016, Trelleborg Group. All rights reserved. Content Contents 5 Introduction 54 C Quality Criteria and Product Range 54 C.1 Quality criteria 19 O-Rings 54 C.1.1 Standard quality 54 C.1.2 Flatness and roundness 21 A General Information 55 C.1.3 Dimension tolerances 65 C.1.4 Surface quality acceptance criteria 21 A.1 Description 70 C.2 Product Range 21 A.2 Applications 70 C.2.1 O-Ring dimensions in accordance with 22 A.3 Method of operation ISO 3601-1 and AS 568 80 C.2.2 O-Ring dimensions in accordance with Swedish standard SMS 1586 23 B Technical Information 84 C.2.3 O-Ring dimensions in accordance with 23 B.1 Materials Japanese standard JIS B 2401 23 B.1.1 Elastomers 90 C.2.4 O-Ring dimensions for straight thread 25 B.1.2 Application parameters of elastomers tube fittings in accordance with 28 B.1.3 Characteristics and inspection of AS 568 elastomers 91 C.2.5 O-Ring dimensions for metric thread 31 B.1.4 Special requirements - authorities and with conical recess in accordance with approvals ISO 6149 33 B.1.5 Standard materials 92 C.2.6 Preferred metric O-Ring dimensions 39 B.2 Installation and Design 99 C.3 O-Ring Seal Sets Recommendations 39 B.2.1 Installation recommendations 40 B.2.2 Methods of installation and design of seal housing 42 B.2.3 Elongation - outside diameter interference 43 B.2.4 Initial compression 45 B.2.5 Groove fill 45 B.2.6 General technical data 46 B.2.7 Housing design and dimensions Latest information available at www.tss.trelleborg.com • Edition December 2016 TRELLEBORG SEALING SOLUTIONS • 3 O-Ring-metrisch_2015.indb 3 23.11.2016 14:55:48 O-RINGS AND BACK-UP RINGS 101 D Special O-Rings 123 H Installation Recommendations and Back-up Ring Dimensions 101 D.1 Isolast® (FFKM) O-Rings 123 H.1 External sealing (Piston), static and 101 D.2 FEP/PFA encapsulated O-Rings dynamic applications 106 D.3 PTFE O-Rings 123 H.1.1 Rectangular Back-up Ring types, uncut (BV) and cut (BH), material PTFE 108 D.4 Polyurethane O-Rings 131 H.1.2 Concave Back-up Ring types, uncut 111 D.5 Fleximold™ O-Rings - large dimensions (BA) and cut (BD), material PTFE 112 D.6 Round cord rings (butt vulcanized) 139 H.1.3 Spiral Back-up Ring types (BP), material PTFE 113 D.7 O-Ring surface finishing 147 H.2 Internal Sealing (Rod), Static and Dynamic Applications 115 Back-up Rings 147 H.2.1 Rectangular Back-up Ring types, uncut (BU) and cut (BG), material PTFE 155 H.2.2 Concave Back-up Ring types, uncut 117 E General Information (BB) and cut (BC), material PTFE 163 H.2.3 Spiral Back-up Ring types (BP), 118 F Back-up Ring Types material PTFE 171 H.3 External (Piston) and Internal (Rod) 118 F.1 Overview Sealing, Static Applications only 119 F.2 Back-up Ring types for external sealing 171 H.3.1 Concave Back-up Ring type (BB), (Piston) material NBR and FKM for O-Rings in 120 F.3 Back-up Ring types for internal sealing accordance with ISO 3601-1 / AS 568 (Rod) General Quality Criteria and Storage 191 121 G Technical Information Guidelines 121 G.1 Materials 121 G.2 Technical Data 193 I General Quality Criteria 122 G.3 Design Recommendations 193 J Guidelines for the Storage of Polymer Products Based on ISO 2230 196 Index 4 • TRELLEBORG SEALING SOLUTIONS Latest information available at www.tss.trelleborg.com • Edition December 2016 O-Ring-metrisch_2015.indb 4 23.11.2016 14:55:48 Introduction Introduction Latest information available at www.tss.trelleborg.com • Edition December 2016 TRELLEBORG SEALING SOLUTIONS • 5 INTROduction Your Partner for Sealing Technology “We build long term partnerships with customers and suppliers by providing leading technology and excellent service.” OUR MISSION We will be the supply partner of first choice within our chosen • Over 80 facilities worldwide markets, working globally through our local teams. We will • More than 20 manufacturing sites build long-term partnerships with customers and suppliers • Seven strategically positioned material by providing leading technology and excellent service. and development laboratories We are determined to be different. • Internationally linked design and application centers SEALING TECHNOLOGY Trelleborg Sealing Solutions offers an outstandingly COMMITMent – TO CUSTOMERS’ comprehensive sealing portfolio – a one-stop-shop providing NEEDS LONG-TERM the best in elastomer, silicone, thermoplastic, PTFE and The aim of Trelleborg Sealing Solutions is to facilitate customers composite technologies; our solutions are featured in virtually in achieving cost-effective, durable solutions that match their every application conceivable within the aerospace, industrial specific business requirements and needs. We are one of the and automotive industries. world's foremost experts in polymer sealing technology. We develop, manufacture and supply safety-critical polymer- A woRLDWIDE PRESENCE based precision seals, bearings and molded components. We are uniquely placed to offer a dedicated design and development service for sealing solutions, globally servicing, supporting and supplying our customers through an unrivaled international network. 6 • TRELLEBORG SEALING SOLUTIONS Latest information available at www.tss.trelleborg.com • Edition December 2016 Product Range Industrial Sealing THE TRELLEBORG GROUP Trelleborg Coated Systems Trelleborg Industrial Solutions Leading global supplier of unique Market leader in such industrial customer solutions for polymer- application areas as hose coated fabrics deployed in a systems, industrial antivibration variety of industrial applications. solutions and selected industrial sealing systems. Trelleborg Offshore & Trelleborg Wheel Systems Construction Trelleborg Wheel Systems is Leading global supplier of a leading global supplier of polymer-based critical solutions tires and complete wheels for deployment in highly for agricultural and forestry demanding environments. machines, materials handling and construction vehicles, and two-wheeled vehicles. Trelleborg Sealing Solutions One of the world’s leading developers, manufacturers and suppliers of precision seals. It supports its aerospace, industrial and automotive customers through over 20 production facilities and more than 50 marketing companies globally. Trelleborg Sealing Solutions Key Industries Aerospace Automotive Machine Tools & Agriculture and Food & Beverage, Life Sciences and Fluid Power construction Vehicles chemical Processing Pharmaceutical Oil & Gas Mining Alternative Energy Marine Sanitary and Heating Semiconductor Latest information available at www.tss.trelleborg.com