by ElringKlinger Kunststofftechnik GmbH

PTFE Piston and Guide Rings for Dry Running Compressors

  • Chemical and thermal resistance to virtually all media used in hydraulics, pneumatics and technical gas applications
  • Operating temperature range depending on application from -60°C to +200°C
  • Suitable for use with no-hardened contact surfaces
  • High bearing capacity, pressure resistance and low wear
  • No stick-slip even with low sliding speeds and high transverse loads
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Our PTFE technology

  • PTFE – even without lubrication – excels at offering an exceptionally low coefficient of friction in combination with metals and plastics
  • PTFE is highly anti-adhesive, without any stick-slip effect
  • PTFE has high elongation properties enabling easy fitting of sealing and guide elements to one-piece pistons
  • PTFE – when subject to moderate stress – offers an exceptionally wide (for plastics) thermal operating temperature range depending on application from -260°C to +260°C
  • PTFE is chemically resistant to nearly all solid, liquid and gaseous media
  • PTFE is age-resistant, non-combustible and physiologically neutral in the state temperature range

Key benefits

  • Outstanding dry-running characteristics
  • Different joint types available for optimal performance
  • Self-clamping piston rings up to 700 mm available

Application areas

  • Compressors operating under full and low-lube conditions
  • Gas rotary pumps
  • Expansion machinery
  • Liquid gas and vacuum pumps
  • Rotation compressors for loading/unloading of tanks
  • Generation of oil-free compressed air

Operating parameters of our piston rings

  • Operating temperature from -60°C to 200°C depending on application
  • Average piston speed up to 5.2 m/s
  • 100 bar max. pressure differences to be sealed
Technology Readiness (TRL)

Manufacturing Readiness (MRL)

Max Ambient Temperature (in °C)

Min Ambient Temperature (in °C)

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    ElringKlinger Kunststofftechnik GmbH

    Innovations in high-performance plastics - for over 50 years, ElringKlinger Engineered Plastics has been one of the technology leaders for seals, engineering design elements, assemblies and modules. At ElringKlinger, innovation always starts with the material. Due to in-house materials development and compounding, Polytetraflon™-PTFE materials and Moldflon™-thermoplastic materials can be customized. Optimal performance for our customers is achieved not only by means of component optimizations using the Finite Elements Method (FEA) but also by selecting suitable materials.

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