Metal gasket types and characteristics

In the harsh operating conditions of high temperature and pressure and frequent load cycles, a variety of metal materials is still the preferred material for gaskets, commonly used materials are copper, aluminum, low carbon steel, stainless steel, chrome-nickel alloy steel, titanium Monel alloy . In order to reduce the load on the bolts and ensure a compact structure, a variety of ring pad structures having a line contact feature are preferred forms of the metal flat pads in addition to their narrow width. ① flat metal gasket. Flat when using wide and narrow gasket gasket two. Wide gasket due to preload requirements, easily lead to bolt flange deformation, the pressure exceeds 1.96MPa rarely used in the smooth surface of the flange. Narrow gasket easy to preload, can be used in the pipeline pressure 6.27-9.8MPa. ② corrugated metal gasket. Wave metal gasket thickness of the metal plate is generally 0.25-0.8mm. Gasket thickness is generally 40% -50% of the wavelength. Suitable for smooth sealing surface, the pressure of 3.34MPa pipeline use. ③ tooth-shaped metal pad. Toothed metal gasket used for 6.77-9.8MPa pipe. Tip distance of about 1.5mm, tooth top, root angle are 90 degrees. The sealing performance is better than the flat gasket, the pressure is also smaller than the flat pad.