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Viton is a fluoroelastomer polymer that is fuel resistant at extreme temperatures. It was introduced to the aerospace industry in 1957 and soon spread to other industries such as appliances, the automotive industry (valve stem seals, transmission seals, powertrain systems), chemical industry, fluid power industry, and the aerospace industry due to its flexibility, reliability, and its ability to perform over a wide temperature range. Viton has a high list of resistances including oil, heat, many concentrated acids, solvent, fungus, mold, UV rays, weather, and atmospheric oxidation.
Fluoroelastomer has a variety of traits that make it ideal for both low and very high-temperature and corrosive applications. It is resistant to oil, heat, and a wide variety of concentrated acids. Viton (fluoroelastomer) can stand up to compression when other elastomers may embrittle at high temperatures. It’s excellent for sealing gases and aliphatic hydrocarbon fluids. Fungus, mold, weather, atmospheric oxidation, and sun do not affect Viton (fluoroelastomer).
There are a few different grades of Viton that have various Fluorine levels. Higher fluorine levels gives a fluoroelastomer greater chemical resistance, but its low-temperature flexibility is lessened as the percentage of fluorine increases.
Fluoroelastomers go by a few different trade names depending on the specific manufacturing company. Dai-El is Daikin Industries’ name for their fluoroelastomer, while Solvay identifies their material as Tenoflon. Dyneon manufacturers a fluoroelastomer that goes by its company name (Dyneon). Fluoroelastomers are also recognized by different abbreviations. FPM is an international abbreviation for fluorelastomer according to DIN/ISO, and FKM is ASTM’s abbreviation for the gasket and seal material.