FEP: Transparent and Flexible Fluoropolymer for Demanding Processes

The solution of choice for the chemical, electronics and medical sectors

FEP (perfluoroethylene-propylene copolymer) is a highly technical fluoropolymer appreciated for its universal chemical resistance, optical transparency and flexibility. Unlike PTFE, it is a meltable thermoplastic, making it compatible with processes such asextrusion and injection molding.

Its thermal stability, moisture resistance and chemical compatibility make it ideal for critical industrial applications, particularly in the aerospace, pharmaceutical, medical and electronics sectors.
 

Key properties of FEP

Virtually absolute chemical inertia

  • Resistant to virtually all known chemicals
  • Only fluorine gas, molten alkali metals or concentrated perchloric acid pose a risk

Excellent thermal resistance

  • Continuous-use temperature: up to 200°C
  • Compatible with all chemical and thermal sterilization methods

Flexibility and transparency

  • Flexible, malleable material, even at low temperatures
  • High optical transparency = visible in medical and instrumentation applications

Stable electrical properties

  • Excellent electrical insulation, even in humid or high-temperature atmospheres
  • Ideal for insulating technical cables and connectors

Ease of processing

  • Unlike PTFE, FEP can be extruded, injected or thermoformed
  • Good dimensional stability after processing

FEP fields of application

Wire and cable insulation

  • Environments with high temperatures, humidity or chemicals
  • Aerospace, nuclear and automotive industries

Pipe and equipment coatings

  • For corrosive or high-purity fluids
  • Used in fine chemicals, pharmaceuticals and laboratories

Medical and pharmaceutical applications

  • Medical tubing, device sheaths, fluid lines
  • Compatible with rigorous sterilization protocols

FEP grades available from DEMGY

Teflon® FEP-9302

  • Extrudable FEP with enhanced impermeability
  • Perfect for cables, joints, industrial pipes

Teflon® FEP-9302X

  • Optimized version of 9302
  • Used in the aerospace and industrial sectors for complex components

DEMGY expertise in FEP transformation

  • Expertise in FEP extrusion and machining processes
  • Assistance in choosing shapes and formats (profiles, tubes, sheaths)
  • Assistance withintegration into standardized environments (FDA, pharmaceutical, aeronautical)
     

Conclusion: FEP, a combination of strength and flexibility

FEP combines the extreme strength properties of fluoropolymers with the processing flexibility of a meltable thermoplastic. DEMGY offers a proven range of Teflon® FEP grades, perfectly suited to the most demanding chemical, thermal and electrical environments.

Associated products