FEP heat shrink is heat-shrink tubing made from FEP (fluorinated ethylene propylene), a high-performance fluoropolymer

What makes FEP heat shrink special？

  • High temperature resistance
    Works continuously up to ~200 °C (392 °F)

  • Excellent chemical resistance
    Shrugs off fuels, solvents, acids, and oils

  • Very low friction / non-stick
    Similar “slippery” behavior to PTFE (Teflon)

  • Electrical insulation
    Stable dielectric properties even at high temps

  • Transparent
    You can still see wires, markings, or joints underneath

FEP Heat Shrink Tube Typical uses

  • Aerospace and aviation wiring

  • Medical devices

  • Semiconductor and lab equipment

  • Chemical processing environments

  • High-temp or chemically aggressive electronics

 

What is the shrink ratio for FEP?

For FEP heat shrink, the shrink ratio is low compared to standard heat-shrink tubing.

Most commonly you’ll see:

  • 1.3:1 (very common)

  • 1.6:1 (also common)

A few specialty products go up to 2:1, but that’s not typical for FEP.