Perfluoroelastomer (FFKM) is a seal material type which has a much higher temperature rating than the more common FKM and can be used on temperatures up to 300°C. FFKM also has a broader chemical resistance than FKM.
FFKM is typically used to seal components which are designed to withstand media temperatures up to 300°C. FFKM is also used as an alternative seal material when the standard fitted seal material is not chemically compatible with the process media.
FFKM is a more expensive material than FKM and therefore it is only used in the construction of measurement equipment when it is absolutely necessary to meet the application requirements.
Kalrez®, Chemraz®, Perlast® and Simriz® are all well known brands of FFKM material used to manufacture O ring seals.
FFKM seals have the best chemical compatibility out of all the elastomers with almost universal chemical resistance.
Media Compatibility Related Terms
More pages related to media compatibility technical terms.