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Are KEL-F® and PCTFE the same?

What is Kel-F? Kel-F® was a trade name for PCTFE (polychlorotrifluoroethylene) utilized by the 3M® Company. In 1995, 3M sold the rights to Daikin® Industries, Ltd, who produces the raw material today under the trade name Neoflon®. PCTFE with the brand Kel-F is no longer available in the marketplace.

What is Neoflon PCTFE M-400H?

Neoflon PCTFE M-400H is a fluoropolymer that has high tensile strength, dimensional stability, and retains its high-performance properties over a large temperature range (-400° to 380°F). This grade of PCTFE has superior mechanical characteristics and gas barrier properties to PFA and FEP. PCTFE is melt-processible, and can be extruded or molded into sheets, rods or tubes.


What are the Benefits & Advantages of PCTFE?

  • Excellent thermal and chemical stability

  • Low gas permeation and outgassing

  • Very low moisture absorption and permeation

  • Highly resistant to cold flow

  • Very rigid and tough

  • Excellent dimensional stability

  • Extremely good low temperature properties to -400°F

  • High chemical-resistance

  • Resistant to oxidation

  • High compressive strength

  • Non-flammable

  • Radiation-resistant

What Types of Products can be Manufactured from PCTFE?

  • Lip seals

  • Valve seats & stems