Polychlorotrifluoroethylene (PCTFE)

Polychlorotrifluoroethylene (PCTFE)


PCTFE is a white translucent material which is very rigid, it has excellent resistance to cold flow, exhibits dimensional stability at a wide temperature range, has very low gas permeability and low moisture absorption properties, PCTFE is also FDA approved.


Application Advantages:

  • Stress-crack resistance, High mechanical strength and low shrinkage rate at low temperatures provide excellent stability for valve seats.
  • Excellent chemical resistance to all inorganic corrosive liquids.
  • Practically zero moisture absorption.
  • Excellent electrical properties maintained in high humidity.

Application Limitations:

  • PCTFE swells slightly in halocarbon compounds, ethers, esters and aromatic solvents.Although PCTFE has excellent chemical resistance, it is still less than that of PTFE.


  • Cryogenicvalve seats
  • High pressure gas seats and seals.
  • Semi-conductor process components such as wafer boats.
  • Sight Glasses and windows.
  • Electrical components.
  • Parts for high vacuum applications.