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C-FLEX™ Metal C-Rings 

The sealing concept of C-FLEX metal C-rings is based on the elastic deformation of a metal “C” substrate which, during the compression cycle, gives a contact point on each sealing surface.

The substrate characteristics determine the compressive load of the seal. This load combined with an accurate compression rate results in a specific pressure which is directly related to the sealing level obtained. A certain specific pressure is necessary to make the seal flow into the flange imperfections. In service, the system pressure supplements this load. A softer surface treatment is available to increase the plasticity of the seal and reduce the specific pressure necessary to reach the desired sealing level.


Features and Benefits

  • Pressure energized
  • Cross section and wall thickness designed to control loading
  • Available for internal, external and axial pressure
  • Pressure: from medium vacuum to 2,000 bar (29,008 PSI)
  • Temperature from -273°C to 730°C (-460°F to 1350°F)
  • Range of materials (Alloy X750, 718, Waspaloy and other exotic metals)
  • Platings and coatings: silver, gold, PTFE (others available)
  • Custom shapes and sizes available


Applications Include:

  • Oil & gas: down hole drilling/MWD
  • Industrial turbines: fuel systems/nozzles
  • Valves: body/bonnet, back seat sealing
  • Aerospace/space: turbo pump, fuel systems, nozzles/injectors, cryogenics
  • Automotive: turbo chargers, exhaust

To learn more about C-FLEX™ metal C-rings, download our C-FLEX™ Metal C-Rings PDF. You can also contact us for a custom-engineered solution to your application or request a quote.