Fluor Viton (FPM)

Fluor Viton is a fluoroelastomer, a special purpose fluorocarbon-based synthetic rubber. It has wide chemical resistance and superior performance, especially in high temperature application in different media. Fluoroelastomer has recently been adopted as the material of choice for the band of the Apple Watch Sport.

The difference between FPM, FKM and Viton®

Whenever a rubber uses the base material fluoro rubber they will be named either FPM or FKM. FPM is the international abbreviation according to DIN/ISO, whereas FKM is the short form for the fluoroelastomer category according to the American standard ASTM. Viton® is the registered trade mark of DuPont Performance Elastomers.


Thanks to the great temperature range, wide range of chemical compatibility and excellent ageing characteristics, Fluorocarbon rubber is the most significant single elastomer developed in recent history. Therefor it stands out in the mechanical seal industry.