Black Fluorocarbon O ring, also known as a FKM o-ring or VITON, FPM orings. FKM (VITON ®) O’Rings have a low compression set and have high temperature and chemical resistance with Durometer / Shore A 90 which use for high pressure. For normal pressure you can use O-Ring FKM shore 75 .

The terms FPM, FKM and FKM® very often cause confusion and lead to incorrect interpretations. All of these designations actually stand for one single base material: fluoro rubber.

O-Ring BS sizes

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