>> 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 PerfluorelastomersPeroxide | 240oC | Broad chemical resistance | Triazinic | 327oC | High temperature, excellent mechanical properties. Reduced chemical and steam properties | Modified Triazinic | 275oC | Broad chemical resistance, excellent mechanical properties | Modified Peroxide | 325oC | High temperature resistance, excellent mechanical properties, reduced amine and base resistance |
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