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Fluorocarbon (e.g. Viton®) The best material for resistance to hostile chemical and oil environments at normal and elevated temperatures. Properties • strong • good resistance to water • good resistance to fuels, oils and most chemicals Limitations • limited use at low temperatures, -20°C being the limit for flexibility • expensive • does n ot resist Ketone solvents Typical Applications • situations requiring resistance to hostile fluids at high temperatures Viton ® is a registered trade mark of DuPont Performance Elastomers