Fluorinated ethylene propylene

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A thermoplastic copolymer of tetrafluoroethylene and hexafluoropropylene. The properties of FEP resin are similar to other fluorinated polymers, such as Teflon® (polytetrafluoroethylene), in that they are resistant to chemicals. The main difference is that FEP is thermoplastic and can be extruded and molded. It is available as a powder, aqueous dispersion, film and monofilament fiber. FEP is used for wire insulation, linings, and nonsticking finishes. Felt fabrics from FEP filaments are used for filtration.

Synonyms and Related Terms

FEP; Teflon® FEP [DuPont]



Melting Point 285-290

Sources Checked for Data in Record

  • Theodore J. Reinhart, 'Glossary of Terms', Engineered Plastics, ASM International, 1988