Metal C-Rings

C-rings are medium to high load seals for axial compression with a medium spring back.

In case a medium to high leak tightness as well as flexibility of the seal are required, C-rings can be used.

C-rings are available for internal and external pressure and are also available as shaped seals.

  • Typical applications

    • Aerospace (GT, fuel systems, hydraulic, satellite, propulsions)
    • Oil and gas & power generation
      • GT, ST-casing, injections systems, heat exchangers
      • Nuclear waste (cask seals)
      • Equivalent for boss-seals
      • Valves
    • High end industrial applications
      • Valves
      • Cryocoolers
      • Turbo chargers
      • Exhaust
      • Lasers
    • Vacuum application
      • Double sealing solutions
      • Remote handling
    • Hot mold
  • Performance indicator

    • Unplated E-2 to E-4 mbar*l/s
    • Plated E-4 to E-9 mbar*l/s
    • Plated + spin polished E-5 to E-10 mbar*l/s
  • Features / requirements

  • Benefits

  • Low to moderate sealing load

    Suitable for softer flange materials (Al,…)

  • Lower bolt force required

  • Increased spring back

    Allows flange lift off

  • Narrow sealing surface, (line contact)

  • Moderate seating stress

    High sealing capability at low compression force

  • Pressure activated

  • Critical circular surface finish required