Terpolymer of tetrafluoroethylene (TFE), a fluorinated vinyl ether (PMVE), and vinylidene fluoride (VF2/VDF). The addition of PMVE provides better low temperature flexibility compared to copolymers and terpolymers. Typically the fluorine content of type 3 FKMs ranges from 62 to 68 weight percent.Information provided by CLWYD COMPOUNDERS LTD. |