FEP is the abbreviation for Fluorinated Ethylene Propylene. It is a type of fluoropolymer/fluoroplastic that can be used as both a cable sheathing and insulation material.
With these physical and electrical attributes, it’s often used on high temperature sensor wires as it allows the power transmittance with minimal losses during the transmittance of signals. As such, FEP insulation and/or sheathing is specified in industries including aviation, life sciences, oil, gas and petrochemical, and defence applications.