Perfluoroelastomers FPM

Perfluoroelastomers provide the elastomeric properties of fluoroelastomers and the chemical resistance of PTFE. These compounds are true rubbers. Compared with other elastomeric compounds, they are more resistant to swelling and embrittlement and retain their elastomeric properties over the long term. In difficult environments, there are no other elastomers that can outperform the FPMs. These s)mthetic rubbers provide the sealing force of a true elastomer and the chemical inertness and thermal stability of polytetra-fluoroethylene. 

As with other elastomers, perfluoroelastomers are compounded to modify certain of their properties. Such materials as carbon black, perfluormated oil, and various fillers are used for this purpose. 

One such perfluoroelastomer is sold by DuPont under the trade name Kalrez. As with other perfluoroelastomers, Kalrez is available in different compounds to meet specific needs. 

It has a maximum continuous operating temperature of 600°F/316°C with short-term exposures at higher temperatures. 

Applications include O-rings, diaphragms, seals, and other parts used in the process and aircraft industries. 

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