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O-ring seal C-FLEX™

O-ring seal
O-ring seal
O-ring seal
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metal, silver, carbon, PTFE, medium
for aircraft
Other characteristics
Temperature limit

Max.: 730 °C
(1,346 °F)

Min.: -273 °C
(-459 °F)

Pressure limit

2,000 bar
(29,007.5 psi)


The sealing design 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 & BENEFITS Properties: Pressure energized Cross-section and wall thickness designed to control loading Available for internal, external and axial pressure Range of materials (Alloy X750, 718, Waspaloy and other exotic metals) Platings and coatings: silver, gold, PTFE (others available) Leak range: Approximately ≤ 25 cc/min @ 50 psig Nitrogen per inch of diameter to ≤ 1 x 10-4 Air. The actual leak rate will depend on seal load, surface finish, and surface treatment. Optional Features: Tribological wear-resistant coatings available Custom shapes and sizes available PRODUCT APPLICATIONS Oil & gas: downhole drilling/MWD Industrial turbines: fuel systems/nozzles Valves: body/bonnet, back seat sealing Aerospace/space: turbopump, fuel systems, nozzles/injectors, cryogenics Automotive: turbochargers, exhaust


*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.