FEP is Widely Used For:

  • Fluid handling and chemical processing equipment
  • Pump housings and pipe linings
  • Semiconductor wet bench equipment
  • Food processing and packaging equipment
  • Medical components

Performance Characteristics:

  • Chemically inert to a wide range of industrial chemicals and solvents
  • Temperature range: -400°F to +392°F
  • Good electrical properties
  • Low coefficient of friction
  • Stress crack resistance
  • Outdoor weathering resistance

Common Brands:

  • Dyneon™


Flexible fluoropolymer with outstanding chemical resistance and electrical properties

FEP (fluorinated ethylene propylene) is a tough, flexible copolymer of tetrafluoroethylene and hexafluoropropylene. It is often used for flexible tubing and fluid processing equipment when chemical resistance, high purity, and low stiffness are required. FEP has outstanding electrical properties and UV resistance. 

FEP FDA Compliant Grade is available.

Tech Tip– FEP is less expensive than PFA, but it has a lower service temperature and somewhat inferior electrical properties.

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SHEET Dimensions:
12 in x 12 in – 24 in x 24 in
0.125 in – 1.500 in
ROD Outside Diameter:
0.125 in – 0.750 in
COLOR White (Natural)
GRADES FDA Compliant

Length, width, thickness, and diameter tolerances vary by size, by manufacturer, brand, and grade. Custom sizes available upon request.

FEP Properties

Typical properties of FEP
Specific gravity   D792 2.12 - 2.17
Water absorption % D570 <0.01
Tensile strength psi D638 4350
Izod impact (notched) ft-lbs/in D256 no break
Flexural modulus psi D790 95,000
Coefficient of friction   D1894 0.25
Coefficient of linear
thermal expansion
in/in/°Fx10-5 D696 7.5

Values may vary according to brand name. Please ask your Curbell Plastics representative for more specific information about an individual brand.

Explore the physical, mechanical, thermal, electrical, and optical properties of FEP.

Sort, compare, and find the plastic material suited for your application using our interactive properties table.