What is the different between Kel-F and PCTFE?
June 14, 2021
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
What Types of Products can be Manufactured from PCTFE?
- Lip seals
- Valve seats & stems
- Sleeve & thrust bearings
- Liner for chemical applications
- Diaphragms & plugs
What Applications are Products Made of PCTFE Used In?
- Cryogenic and chemical processing components
- Seals and gaskets
- Aerospace valve seats, pump parts, impellers, diaphragms and plugs
- Laboratory instruments
- Nuclear service / high radiation exposure
- Liquid oxygen and liquid nitrogen valve linings