FEP is the copolymer of tetrafluoroethylene(TFE) and hexafluoropropylene(HFP),can be used to produce high temperature wire/tube. What is the FEPPerfluorinated ethylene propylene (FEP) is the copolymer oftetrafluoroethylene ... of aircraft, spacecraft,communication, computer, electricity instrument, high buildings andhigh temperature up to 200°C for a long time, etc, due to its ...