The octagonal gasket is a solid metal gasket with an octagonal cross-sectional shape by forging, heat treatment and machining of metal materials. It has a radial self-tight sealing effect. It depends on the contact between the gasket and the inner and outer surfaces (mainly the outer side) of the flange trapezoidal groove, and is pressed to form a seal. The general materials used are: carbon steel, stainless steel 304, 316, etc.
Performance characteristics of octagonal metal ring gasket: high temperature resistance, high pressure resistance, suitable for high pressure flange; durable and reliable sealing; adapt to the working conditions of pressure and temperature fluctuation; application scope of octagonal metal ring gasket: usually used in high temperature and high pressure steam, Pipe flanges for gases, solvents, tower tanks, pressure vessels, high speed joints, high temperature and high pressure valves, wellhead installations in the oil and gas industry and sealing on Christmas trees.
Octagonal gasket seal refers to a kind of flange seal in which the sealing element is a metal ring with octagonal section, which is a forced seal. The octagonal gasket is placed in the trapezoidal ring groove of the two connecting flanges. The hypotenuse angle of the gasket and the ring groove section is both 23°. The octagonal gasket material is made of pure iron, low carbon steel and stainless steel than the flange ring groove material. Low hardness.