Polychlorotrifluoroethylene (PCTFE)
Description
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
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.
Usage:
- 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.