O-ring FFKM
O-Rings in FFKM Perfluoro Elastomer (KALREZ®)
The high-performance material Perfluoro Elastomer, known by the abbreviation FFKM, combines the elastomer’s elasticity and sealing force with the very high chemical resistance of PTFE.
Advantages of FKKM
Due to its special material properties, FFKM is primarily used in industries such as the chemical, pharmaceutical, life science, semiconductor and oil and gas industries wherever a high sealing effect, exceptional chemical resistance and thermal stability are required.
The proven consistent performance of Kalrez® seals means that seal changes, repairs and inspections are less frequent. Thanks to this material's durability, process and equipment uptime is extended, maximising productivity and yield.
Fields of application of FFKM
As authorised distributor of DuPont Performance Polymers, Angst+Pfister has a wide range of Kalrez® O-rings in the following materials:
Kalrez® 4079 offers very broad chemical resistance with low compression set and a maximum operating temperature up to 316°C.
Kalrez® 6375 is an excellent choice for use in acids, bases, amines, steam, ethylene oxide and many other aggressive chemicals and this at operating temperatures up to 275°C.
Kalrez® 6230 (black material) and Kalrez® 6221 (white material) are mainly used in the pharmaceutical and life science industries and are therefore FDA compliant and USP Class VI approved.