PTFE: The Inert Polymer par Excellence for Extreme Applications

An essential material for hostile environments

PTFE (polytetrafluoroethylene) is an emblematic fluoropolymer known under the trade name Teflon®. Thanks to its universal chemical resistance, extreme heat resistance and ultra-low coefficient of friction, PTFE has become a benchmark for cutting-edge industries such as chemicals, pharmaceuticals, electronics, energy, aeronautics and food processing.

This virtually inert material boasts unique characteristics that make it irreplaceable in many demanding technical configurations.

Outstanding PTFE properties

Total chemical inertia

  • Resistant to all acids, bases, solvents and gases (with a few rare exceptions)
  • Does not degrade in contact with aggressive or corrosive fluids

Extreme temperature resistance

  • Continuous-use temperature range: -200°C to +260°C
  • Does not melt (glass transition temperature 327°C), remains stable in solid form

Very low coefficient of friction

  • Lowest among engineering plastics: μ ~ 0.05 to 0.1
  • Ideal for sliding and antifriction applications

Excellent dielectric strength

  • Excellent electrical insulation, even at high frequencies and temperatures
  • Does not absorb moisture or electrostatic fields

Naturally non-stick

  • Non-sticky surface, even in the presence of viscous or loaded substances
  • Prevents clogging and facilitates cleaning

PTFE industrial applications

Chemical & pharmaceutical industry

  • Tank linings, pump seals, gaskets
  • Transfer of corrosive or ultra-pure fluids

Electronics & high voltage

  • Insulation for cables, capacitors, PCB substrates
  • Resistant to electric arcs and charged atmospheres

Medical & food

  • Biocompatible tubes and membranes, non-stick surfaces
  • Resistance to steam, gamma or chemical sterilization

Mechanics & tribology

  • Bearings, bushings, spacers for lubrication-free environments
  • Dry-running even under high pressure

DEMGY's PTFE grades

Virgin Teflon® PTFE

  • Filler-free -- for chemical, electrical and food applications
  • Maximum purity and optimum dielectric properties

Glass-fiber-filled PTFE

  • Improved mechanical and wear resistance
  • Perfect for tribological applications

Graphite-filled PTFE

  • Reduced coefficient of friction, increased abrasion resistance

PTFE + carbon or bronze

  • Dimensional stability, pressure resistance and slip resistance

DEMGY & PTFE: Total control of the material and its processing

  • High-precision machining of complex parts
  • Extrusion, molding, grinding, custom cutting
  • R&D support for specific high-stress projects
  • ISO certification, FDA compliance and full documentation

Conclusion: PTFE, the benchmark for your critical applications

Polytetrafluoroethylene offers unrivalled stability, safety and reliability. DEMGY offers a complete range of virgin or modified PTFE grades, combined with proven industrial know-how, to meet the most demanding requirements in terms of resistance, sliding and durability.

Associated products