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.
120cm range 4-20mA submersible chemical tank level sensor for farm water line mineral injection
LMK807 Plastic Submersible Level Transmitter
DMK 331 Ceramic Diaphragm Industrial Pressure Transmitter- High sulphuric acid content resistant 16 bar g 4-20mA water pressure sensor
Media Compatibility Related Terms
More pages related to media compatibility technical terms.
- Air Pressure
- Al2O3
- Bonded Seal
- Dry Cell
- Dry/Dry
- EPDM – Ethylene Propylene Diene Monomer
- FEP – Fluorinated Ethylene Propylene
- Food Grade
- High Temperature Protection
- Hydrostatic Pressure
- IP Ratings
- Oxygen Service
- PUR, PU – Polyurethane
- PVC – Polyvinyl Chloride
- Stainless Steel Pressure Sensors
- Submersible
- Wet/Dry
- Wet/Wet
- Wetted Parts