FEP (fluorinated ethylene propylene) is a copolymer of hexafluoropropylene and tetrafluoroethylene. FEP non-stick coatings provide smooth non-porous films. Because the coating is non-porous, FEP is chemically inert and has very low dielectric constant over a wide frequency range. FEP possesses high degree of stress crack resistance, very low coefficient of friction, exceptional dielectric properties, good heat resistance, retention of its properties at 400°F (204°C) with useful properties at -454°F (-270°C).

 

FEP has high transparency (with good transmittance of Ultraviolet and visible wavelengths.) It has long term weatherability and excellent resistance to ozone, sunlight and weather. FEP offers the lowest refractive index of all thermoplastics with low light reflection (the same as water.)

 

This coating is typically applied to a thickness of 1-2 mils.

 

 

 

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