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T r el l ebo rg S E A L I N G S O LU T I O N SO-Rings andBack-up Ringsyou r pa r tne r f o r sea l ing T ec h no logy

Your Partner for Sealing TechnologyTrelleborg Sealing Solutions is a major international developer,manufacturer and supplier of seals, bearings and moldedcomponents in polymers. We are uniquely placed to offerdedicated design and development from our market-leadingproduct and material portfolio: a one-stop-shop providing thebest in elastomer, silicone, thermoplastic, PTFE and compositetechnologies for applications in aerospace, industrial andautomotive industries.With 50 years of experience, Trelleborg Sealing Solutions engineerssupport customers with design, prototyping, production, test andinstallation using state-of-the-art design tools. An internationalnetwork of over 70 facilities worldwide includes over 20 manufacturing sites, strategically-positioned research and developmentcenters, including materials and development laboratories andlocations specializing in design and applications.proprietary compounds and a range of unique products.Trelleborg Sealing Solutions fulfills challenging servicerequirements, supplying standard parts in volume or a singlecustom-manufactured component, through our integratedlogistical support, which effectively delivers over 40,000 sealingproducts to customers worldwide.Facilities are certified to ISO 9001:2008 and ISO/TS 16949:2009.Trelleborg Sealing Solutions is backed by the experienceand resources of Trelleborg Group, one of the world’s foremostexperts in polymer technology.ISO 9001:2008ISO/TS 16949:2009Developing and formulating materials in-house, we utilizethe resource of our material database, including over 2,000The 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 operatingparameters, 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 individualapplications. 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 directlyor 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.

ContentContents5Introduction19O-Rings21A General Information21A.1 Description21A.2 Applications22A.3 Method of operation54C Quality Criteria and ProductRange5454545565C.1 Quality criteriaC.1.1 Standard qualityC.1.2 Flatness and roundnessC.1.3 Dimension tolerancesC.1.4 Surface quality acceptance criteria707092C.2 Product RangeC.2.1 O-Ring dimensions in accordance withISO 3601-1 and AS 568C.2.2 O-Ring dimensions in accordance withSwedish standard SMS 1586C.2.3 O-Ring dimensions in accordance withJapanese standard JIS B 2401C.2.4 O-Ring dimensions for straight threadtube fittings in accordance withAS 568C.2.5 O-Ring dimensions for metric threadwith conical recess in accordance withISO 6149C.2.6 Preferred metric O-Ring dimensions99C.3 O-Ring Seal Sets8023B Technical Information23232528B.1 MaterialsB.1.1 ElastomersB.1.2 Application parameters of elastomersB.1.3 Characteristics and inspection ofelastomersB.1.4 Special requirements - authorities andapprovalsB.1.5 Standard materials31333939404243454546B.2 Installation and DesignRecommendationsB.2.1 Installation recommendationsB.2.2 Methods of installation and design ofseal housingB.2.3 Elongation - outside diameterinterferenceB.2.4 Initial compressionB.2.5 Groove fillB.2.6 General technical dataB.2.7 Housing design and dimensionsLatest information available at www.tss.trelleborg.com Edition December 2016O-Ring-metrisch 2015.indb 3849091TRELLEBORG SEALING SOLUTIONS 323.11.2016 14:55:48

O-RINGS AND BACK-UP RINGS101D Special O-Rings101D.1 Isolast (FFKM) O-Rings101D.2 FEP/PFA encapsulated O-Rings106D.3 PTFE O-Rings108D.4 Polyurethane O-Rings111D.5 Fleximold O-Rings - large dimensions112D.6 Round cord rings (butt vulcanized)113D.7 O-Ring surface finishing123H Installation Recommendationsand Back-up Ring Dimensions123H.1 External sealing (Piston), static anddynamic applicationsH.1.1 Rectangular Back-up Ring types, uncut(BV) and cut (BH), material PTFEH.1.2 Concave Back-up Ring types, uncut(BA) and cut (BD), material PTFEH.1.3 Spiral Back-up Ring types (BP),material PTFE123131139147115Back-up Rings117E General Information147155163118F Back-up Ring Types118F.1 Overview119F.2 Back-up Ring types for external sealing(Piston)120F.3 Back-up Ring types for internal sealing(Rod)121G Technical Information121G.1 Materials121G.2 Technical Data122G.3 Design Recommendations4 TRELLEBORG SEALING SOLUTIONSO-Ring-metrisch 2015.indb 4171H.2 Internal Sealing (Rod), Static andDynamic ApplicationsH.2.1 Rectangular Back-up Ring types, uncut(BU) and cut (BG), material PTFEH.2.2 Concave Back-up Ring types, uncut(BB) and cut (BC), material PTFEH.2.3 Spiral Back-up Ring types (BP),material PTFE171H.3 External (Piston) and Internal (Rod)Sealing, Static Applications onlyH.3.1 Concave Back-up Ring type (BB),material NBR and FKM for O-Rings inaccordance with ISO 3601-1 / AS 568191General Quality Criteria and StorageGuidelines193I General Quality Criteria193J Guidelines for the Storage ofPolymer Products Based onISO 2230196IndexLatest information available at www.tss.trelleborg.com Edition December 201623.11.2016 14:55:48

IntroductionIntroductionLatest information available at www.tss.trelleborg.com Edition December 2016TRELLEBORG SEALING SOLUTIONS 5

I N T RO du c tionYour Partner forSealing Technology“We build long term partnerships with customers and suppliersby providing leading technology and excellent service.”Our MissionWe will be the supply partner of first choice within our chosenmarkets, working globally through our local teams. We willbuild long-term partnerships with customers and suppliersby providing leading technology and excellent service.We are determined to be different.Sealing technologyTrelleborg Sealing Solutions offers an outstandinglycomprehensive sealing portfolio – a one-stop-shop providingthe best in elastomer, silicone, thermoplastic, PTFE andcomposite technologies; our solutions are featured in virtuallyevery application conceivable within the aerospace, industrialand automotive industries.A worldwide presence Over 80 facilities worldwide More than 20 manufacturing sites Seven strategically positioned materialand development laboratories Internationally linked design andapplication centersCommitment – To customers’needs long-termThe aim of Trelleborg Sealing Solutions is to facilitate customersin achieving cost-effective, durable solutions that match theirspecific business requirements and needs. We are one of theworld's foremost experts in polymer sealing technology.We develop, manufacture and supply safety-critical polymerbased precision seals, bearings and molded components.We are uniquely placed to offer a dedicated design anddevelopment service for sealing solutions, globally servicing,supporting and supplying our customers through an unrivaledinternational network.6 TRELLEBORG SEALING SOLUTIONSLatest information available at www.tss.trelleborg.com Edition December 2016

Product Range Industrial SealingThe Trelleborg GroupTrelleborg Coated SystemsLeading global supplier of uniquecustomer solutions for polymercoated fabrics deployed in avariety of industrial applications.Trelleborg Industrial SolutionsMarket leader in such industrialapplication areas as hosesystems, industrial antivibrationsolutions and selected industrialsealing systems.Trelleborg Offshore &ConstructionLeading global supplier ofpolymer-based critical solutionsfor deployment in highlydemanding environments.Trelleborg Wheel SystemsTrelleborg Wheel Systems isa leading global supplier oftires and complete wheelsfor agricultural and forestrymachines, materials handlingand construction vehicles, andtwo-wheeled vehicles.Trelleborg Sealing SolutionsOne of the world’s leading developers,manufacturers and suppliers of precisionseals. It supports its aerospace, industrialand automotive customers through over20 production facilities and more than50 marketing companies globally.Trelleborg Sealing Solutions Key IndustriesAerospaceAutomotiveMachine Tools &Fluid PowerAgriculture andConstruction VehiclesFood & Beverage,Chemical ProcessingLife Sciences andPharmaceuticalOil & GasMiningAlternative EnergyMarineSanitary and HeatingSemiconductorLatest information available at www.tss.trelleborg.com Edition December 2016TRELLEBORG SEALING SOLUTIONS 7

I N T RO du c tionOurGlobal ResourcesAmericas1 R & D Center14 Marketing Companies1 Logistics Center SCM9 Manufacturing SitesDamping Solutions2 Automotive Hubs4 Aerospace Hubs9 Research & Development Centers53 Marketing Companies4 Logistics Centers26 Manufacturing SitesDamping Solutions5 Automotive Hubs8 Aerospace Hubs8 TRELLEBORG SEALING SOLUTIONSLatest information available at www.tss.trelleborg.com Edition December 2016

Product Range Industrial Sealing5,300employees82worldwidelocationsMore than2,000proprietary materialformulationsHow local is yourglobal seal supplier?www.global-but-local.comEurope7 R & D Centers22 Marketing Companies1 Logistics Center SCM15 Manufacturing SitesDamping SolutionsAsia1 R & D Center17 Marketing Companies2 Logistics Centers SCM2 Manufacturing SitesDamping Solutions1 Automotive Hub2 Automotive Hubs2 Aerospace Hubs2 Aerospace HubsLatest information available at www.tss.trelleborg.com Edition December 2016TRELLEBORG SEALING SOLUTIONS 9

I N T RO du c tionProducts, Brandsand MaterialsDecades of experience designing and manufacturing polymer solutions has led Trelleborg Sealing Solutions to develop,manufacture and supply a range of unique materials and proprietary product designs, many of which have becomeindustry standards. Development is ongoing, ensuring that our solutions meet the changing needs of our customers,as well as the latest industry trends and regulations.World renowned names unitedOur pioneering productsWe own many of the longest established and leadingnames within the seal industry. These include:Trelleborg Sealing Solutions is pioneering and is continuouslydeveloping innovative products. American VarisealBusak ShambanDowty SealsChase WaltonForshedaGNLImperviaNordexOrkotPalmer Chenard PolypacSSFSF MedicalShambanSilcofabSilcotechSkegaStefaWills Turcon AQ Seal D-A-S Compact Seal Turcon Double Delta Turcon Excluder Turcon Glyd Ring TTurcon HatsealZurcon L-Cup Turcite Slydring Turcite B-Slydway Turcon Stepseal 2KTurcon Stepseal VV-Ring Turcon Varilip PDRTurcon Variseal Turcon VL Seal Turcon Wedgpak Wills Rings Zurcon WynsealProprietary materialsOngoing development has yielded some of the mostsuccessful sealing and bearing materials available. HiMod Isolast Orkot Turcite Turcon Turel Zurcon To design a solution for your specific needs, contact yourlocal Trelleborg Sealing Solutions marketing company.10 TRELLEBORG SEALING SOLUTIONSLatest information available at www.tss.trelleborg.com Edition December 2016

Product Range Industrial SealingLatest information available at www.tss.trelleborg.com Edition December 2016TRELLEBORG SEALING SOLUTIONS 11