Viton

Originally developed by DuPont (under the brand name Viton, now owned by Chemours), FKMs are today also produced by many other companies, including Daikin (Dai-El), 3M (Dyneon), Solvay S.A. (Tecnoflon), HaloPolymer (Elaftor), Gujarat Fluorochemicals (Fluonox), and several Chinese manufacturers. Fluoroelastomers are more expensive than neoprene or nitrile rubberelastomers, and in comparison they provide additional resistance to heat and chemicals. There are three ways that the FKMs can be separated into classes: by their chemical composition, their fluorine content, or their cross-linking mechanism.