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O ring guide superior TECHNICAL GUIDE FOR PRECISION MOULDED SEALS CDESIGN DEVELOP IMPROVE CTHE SUPERIOR TECHNICAL GUIDE THE SUPERIOR TECHNICAL GUIDE We believe that this latest edition of the guide will become an invaluable resource for anyone involved in

TECHNICAL GUIDE FOR PRECISION MOULDED SEALS CDESIGN DEVELOP IMPROVE CTHE SUPERIOR TECHNICAL GUIDE THE SUPERIOR TECHNICAL GUIDE We believe that this latest edition of the guide will become an invaluable resource for anyone involved in the speci ?cation and application of elastomer seals We have not designed it to be a catalogue but a reference to guide you through the relevant selection and design processes It will become clear as you use the guide that we are not in the business of commodity production Superior manufactures precision components from specialised high performance rubber compounds As a result we actively seek the most demanding customers We relish involvement at the earliest point in their product development cycle And it ? s the customer who bene ?ts most more e ?ective application of seals means better product design ?? everyone wins To this end we have committed to a culture of continuous aggressive improvement in the design manufacture and supply of precision ? O ? rings and special mouldings We like to exceed expectations Innovation and Investment are the keys to this Natural curiosity and the desire to ?nd better processes and methodologies feeds the Superior promise to innovate Re-investment in state-of-the-art facilities and valued accountable people increases our ability to convert ideas into production reality This guide is a part of that investment Use it with con ?dence It is fully backed by both our Engineering and Technical Service teams who are on hand to o ?er advice and support we strongly recommend using these services as part of your design development process You will ?nd the contact number at the foot of each page These services have been developed with you in mind If you have any issues or comments arising from them please contact us in the ?rst instance SUPERIOR SEALS WWW SUPERIORLTD COM C THE SUPERIOR TECHNICAL GUIDE THE SUPERIOR TECHNICAL GUIDE CONTENTS Research Development and Partnership Consultation Testing Optimising Tooling Staying Ahead Specifying Compounds Important Environmental Parameters Temperature Approvals Media Compatibility Rating Materials Reference Guide Elastomer Properties Hardness Compression Set Ageing Low Temperature Flexibility Tensile Strength Elongation Tear Strength Gas Permeability Abrasion Colour Media Table Producing an Order Speci ?cation Seal Design Introduction Precision ? O ? rings Sealing Types Groove Layouts Static Sealing ?? Axial and Triangular Static Axial Face Housing Static Triangular Housing Static Dynamic Sealing ?? Radial ? O ? ring Stretch in Piston Sealing Reduction of Cross-Section due to Stretch Gough-Joule E ?ect ? O ? ring Size Compound Selection Program Pressure Bespoke Seal Design Precision Mouldings Bespoke Seals Seal Integrity Seal Performance Development of a Seal Pro ?le Quality Standards Compliance ? O ? ring Size Range Standards Quality Acceptance Criteria ISO - Limits of Surface Imperfections Quality Control Documentation Seal Surface Inspection Levels Special Moulding Tolerances Certi ?cation Environmental Compliance Assembly Care and Storage Fitting Aids ? O ? ring Stretching for Assembly Cleanliness Cleaning Materials Preparation of Housing Mating Parts Light Humidity Contaminants Stress Temperature Oxygen and Ozone Shelf Life