PolyCloroTriFluoroEthylene (PCTFE) is a melt-processable homopolymer in which one fluorine atom of the PTFE structure is substituted by a chlorine atom. This atom replacement gives some advantages to PCTFE such as transparency, lower gas permeability, and higher mechanical strength to the detriment of a higher coefficient of friction over PTFE.
The amount of crystallinity of PTCFE may be controlled by its thermal history, especially the cooling speed during processing. High crystalline PCTFE is denser and has high mechanical strength and low elongation, whereas low crystalline PCTFE has a lower density, is more elastic, and optically clear. Our PB23000 materials meet the requirements of ASTM D1430.
PBY Material Codes:
PB23000-LC - PCTFE Low Crystallinity
PB23000D-HC - PCTFE High Crystallinity
Cold Flow Resistant
Very low outgassing and permeation
Zero moisture absorption
Excellent chemical resistance
Common Brands: Neoflon® Kel-F® Aclon®
Chemical Processing Components
Gaskets and Seals
Aerospace pump parts, valve seats, impellers
Nuclear Service components and high radiation exposure components
Liquid oxygen and liquid nitrogen valve linings
This product meets ASTM D1430 Group 1 Class 1 Grade 3, AMS 3645 and 3650 requirements
PB23000-LC PB23000D-HC - Material Data Sheet
|Property||Test Method||Units||Typical Values|
|Color||-||-||Translucent to White|
|Specific Gravity||ASTM D792||-||2.100 - 2.150|
|Hardness Shore D||ASTM D2240||-||76 - 86|
|Tensile Strength, min.||ASTM D638||PSI [MPa]||5,000 [34.5]|
|Elongation at Break, min.||ASTM D638||%||100|
|Tensile Modulus, min.||ASTM D638||PSI [MPa]||171,000 |
|Service Temperature High||-||°F [°C]||356 |
|Service Temperature Low||-||°F [°C]||-427 [-255]|
|Second Melt Peak Temp.||ASTM D3418||°F [°C]||413 |
|Glass Transition Temp.||ASTM D3418||°F [°C]||113 |
- Wypych, George. Handbook of Polymers. 2nd Ed., ChemTec/Publishing, 2016.
- Ebnesjjad, Sina. Fluoroplastics Vol1 & Vol2. 2nd Ed., Elsevier Inc., 2015.
- Aerospace Materials Specifications for PTFE materials (AMS3678)
- American Society for Testing and Materials (ASTM) Standards