Advanced Engineering Plastic

PTFE CF25 (Polytetrafluoroethylene Carbon Fiber Filled 25%)

Main Feature

PTFE Carbon filled CF25  has improved dimensional stability with a lower coefficient of linear thermal expansion and higher deformation under load than Virgin PTFE. When compared to glass filled PTFE grades carbon filled grades are less abrasive to mating surfaces in bearing applications and can be used in strong alkali and in HF, where glass reinforced grades typically fail.

Preferred Fields

  • Bushings & Bearings
  • Chemical Processing Components
  • Electrical Components
  • Gaskets
  • Pump & Valve Components
  • Seals
  • Valve Seats
  • Wear Pads

Typical Properties of PTFE CF25

Characteristics:

 

    • Excellent Chemical Resistance
    • Higher Thermal Conductivity than Unfilled PTFE
    • Improved Stiffness vs. Unfilled PTFE
    • Lower CLTE vs. Unfilled PTFE
    • No Abrasive to Mating Surface
    • Resistance to Weathering
    • Self-Lubricating
    • Very Low Coefficient of Friction
    • Wide Operating Temperature Range from Cryogenic to 500F

    Limitations

    • High Loads
    • Subject to Creep, Cold Flow
    • Thermal Expansion
    • Tight Tolerance Applications