Tetrafluoroethylene Propylene
(FEPM, TFE/P)
Properties and Applications
Tetrafluoroethylene propylene (FEPM, TFE/P), also known as Aflas®, is a partially fluorinated elastomeric polymer consisting of propylene and tetrafluoroethylene repeat units. Its thermo-physical properties are similar to those of polytetrafluoroethylene (PTFE) but somewhat inferior. For example, it has excellent thermal, electrical and chemical resistance. However, unlike PTFE resin, it is melt-processable using conventional injection molding and extrusion equipment.
FEPM is ideally suited for applications where broad chemical resistance, high durability over a wide temperature range, and excellent dielectric properties are required. It provides some of the best all-around chemical resistance and is mainly used for the manufacture of seals operating in harsh environments.