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>> Perfluorelastomers (FFKM) 

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Perfluorelastomers (FFKM) have a fully fluorinated polymer backbone resulting in fluorine content of over 71%.
As all of the bonds on the backbone are carbon-fluorine then FFKM materials offer the ultimate thermo-chemical resistance shown by the good long-term high temperature compression-set resistance.
Although all FFKM polymer backbones are fully fluorinated the cross linking systems used to join the polymer chains together differ significantly, resulting in differing temperature and chemical resistance.

Common types of Perfluorelastomers

Peroxide

240oCBroad chemical resistance

Triazinic

327oCHigh temperature, excellent mechanical properties. Reduced chemical and steam properties

Modified Triazinic

275oCBroad chemical resistance, excellent mechanical properties

Modified Peroxide

325oCHigh temperature resistance, excellent mechanical properties, reduced amine and base resistance

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