The unique U-shaped design of these rings is a key feature. When installed between two mating surfaces, the U-shape allows for a more flexible and conformable fit. In service, the system pressure acts on the Metal U-rings, causing it to expand and press firmly against the sealing surfaces. This pressure-induced deformation increases the contact stress along the sealing interface, effectively minimizing the potential for leakage.
The geometry of Metal U-rings can be precisely engineered to meet the specific requirements of each distinct application. Whether it's a need for a wider or narrower U-shape, or a particular thickness of the metal, manufacturers can customize these aspects. Moreover, Metal U-rings can be manufactured in a comprehensive range of sizes, ensuring that they can be used in various equipment and systems with different dimensional specifications.
Types:
Metal U-Ring for Internal Pressure: a resilient internally pressurized static face seal open on the inside, enabling it to bear the same pressure as its internal operational conditions. Ideal for assemblies, pressure vessels, jet engines, fuel injectors, lighter flanges, etc.
Metal U-Ring for External Pressure: a robust externally pressurized static face seal open on the outside, designed to withstand the same pressure as its external operational conditions. It comes with good springback properties to accommodate thermal cycles.
Properties:
• High springback/low load
• Seal profile and wall thickness designed to control loading and springback
• Available for internal and external pressure
• Range of materials (Alloy X750, 718, Waspaloy and other exotic metals)
• Large and segmented diameters available (>2000 mm/ >78.74 in)
• Temperature range: from -273°C to 730°C (-460°F to 1350°F)
• Pressure range: 100+ bar (1,450 PSI)
• Leak rate: approximately ≤ 25 cc/min @ 50 psig Nitrogen per inch of diameter. The actual leak rate will depend on seal load, surface finish, and surface treatment.