The metal ring gasket matches the flange groove mainly through surface contact. Although it is not easy to achieve a tight fit with the flange groove compared to the oval ring gasket, it can be reused and is easy to process due to its straight cross-section. At the same time, the hardness of the octagonal metal ring gasket material should be 15-20HB lower than that of the flange surface.
Performance characteristics of metal ring gasket:
1. High temperature and high pressure resistance, suitable for high-pressure flanges;
2. Durable and reliable sealing;
3. Adapt to working conditions with fluctuating pressure and temperature;
Application scope of metal ring gasket: It is usually used for pipe flanges, tower tanks, pressure vessels, high-speed joint surfaces, high-temperature and high-pressure valves, and covers for high-temperature and high-pressure steam, gas, and solvent. Wellhead equipment and seals on Christmas trees in the petroleum and natural gas industry
In the early 1920s, it was used in the field of boilers, and later in the sealing of manhole covers and other windows of high-pressure reactors. It was particularly valued in the petroleum production and refining industry. As the temperature and pressure of steam power plants increase, the use of metal gaskets becomes increasingly widespread.
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