Polytetrafluoroethylene (PTFE) is a polymer with properties that are impossible to find in any other plastic material.

Its most peculiar characteristics include:

  • Exceptional chemical resistance
  • High range of service temperatures and very low thermal conductivity
  • Good electrical insulation
  • Minimal moisture absorption
  • Excellent aging resistance
  • Low coefficient of friction

PTFE is available both virgin and filled. The most important additives are:

  • Glass fiber: improved wear resistance and chemical resistance (except to alkalis and hydrofluoric acid)
  • Carbon: for enhanced thermal conductivity and wear resistance
  • Graphite: for improved wear resistance
  • Molybdenum disulfide: for increased sliding properties and decreased friction
  • Bronze: for improved compression strength and wear resistance but reduced chemical resistance
  • Stainless steel: for improved compression strength, high thermal conductivity, chemical resistance, and absence of electrostatic charges
  • Carbon fiber: for improved thermal dimensional stability and resistance to abrasion

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