FKM (Fluoroelastomer)

Grade of Rubber. Grades are not interchangeable.

Fluoroelastomer, ASTM FKM. FPM is the older ISO-style name and Viton is a Chemours trademark. Both resolve to FKM for identification only. Neither means every FKM grade is Viton or interchangeable with every other fluoroelastomer. This entry identifies the family only. It does not state hardness, dimensions, stock, a certificate, or a lead time.