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PCTFE (PolyChloroTriFluoroEthylene) is a fluorocarbon based polymer and is frequently abbreviated as PCTFE. PCTFE combines physical and mechanical properties, non-flammability, chemical resistance, near zero moisture absorption and excellent electrical properties not found in any other thermoplastic fluropolymer. This material also has high compressive strength, an exceptional resistance to cold flow, and performs well in a temperature range of -400° F to 400°F.

PCTFE maintains an outstanding electrical-insulating capability through thermal cycling and in high humidity environments. This material’s high compressive strength and dimensional stability make it a good choice for structural material, while its low outgassing rate (0.01% TML, 0.00% CVCM, 0.00% WVR when tested per ASTM E-595-90), and permeability make PCTFE a great choice for laboratory, aerospace, flight applications, and instrumentation.

Brand Names

  • Kel-F®
  • Diakon®
  • Chemflour®
  • Tecaflon®

Emco Industrial Plastics doesn’t claim to represent all of the manufacturers or trade name products listed. This list is intended as a guide of typical materials available for purchase from Emco Industrial Plastics, Inc. For additional information, contact an Emco Industrial Plastics representative at 973-542-2152.

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At a Glance

Generic Name

Available In
Sheet, Rod, Tube

ASTM-D-1430, AMS 3650, FDA Regulation 21 CFR 177.1380, Mil-P 55028, Mil-P 46036 Type 1 (general) & Type 2 (electrical)

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Technical Information

Stock Products Properties Applications Advantages Downloads

Stock Products

Sheet .125” – 1.25” Std sizes CTS White
Rod .125” – 3” dia Std sizes CTS White
Tube I.D. 1/16” – 7/8” O.D. 1/8” – 1″ Std sizes CTS White

Give us your cut-to-size dimensions. We will precision-cut these plastics to your exact size. Additional sizes and colors available upon request.


Physical PropertiesUnitsASTMResults
Density g/cm^3 D792 2.12
Mechanical PropertiesUnitsASTMResults
Tensile Strength psi D638 5200
Tensile Elongation @Break % D638 150
Flexural Modulus psi 228-271×10^3
Compressive Strength psi D695 5710-6430
Hardness, D D785 85-95
IZOD Impact Strength Notched ft-lb/in D256 2.5-3.5
Thermal PropertiesUnitsASTMResults
Heat Deflection Temp at 66 psi °C D648 126
Melting Temperature °C D3418 210-212
Electrical PropertiesUnitsASTMResults
Dielectric Strength. 1/8″ th. V/mil D149 500
Dielectric Constant @1 MHz D150 0.02
Dissipation Factor@1 MHz D150 2.6
Surface Resistivity @60 Hz ohm-cm D257 10^15
Volume Resistivity, 50% RH ohm-cm D257 2×10^17
NOTE: The property values presented above are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers’ complete material property datasheets. All values at 73°F (23°C) unless otherwise noted.


  • Bearings-Sleeve & Thrust
  • Compressors & Pumps
  • Valves-Seats, Stems, & Seals
  • Cryogenic Applications
  • Films
  • Gaskets
  • Piston Rings


  • Near zero moisture absorption
  • Extremely low outgassing
  • Excellent electrical insulating properties
  • Resists most corrosive chemicals
  • Excellent performance under a wide temperature range
  • Nonflammable


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