FEP is a thermoplastic with similar properties to PTFE materials.
FEP (Fluorinated ethylene propylene) is a tough, flexible copolymer made up of tetrafluoroethylene and hexafluoropropylene. Its often used for flexible tubing and fluid processing pumps, when chemical resistance, high purity, and low stiffness are required. FEP has outstanding electrical properties and UV resistance. It has similar properties to PTFE, however, has a lower maximum temperature of -15C to 200C, it can be more easily processed and can be more easily welded and re-moulded into complex profiles.