Metal wrapped gasket 304 316L octagonal gasket material is usually carbon steel, stainless steel 304, 316, etc., suitable for sealing flange of high temperature and high pressure pipelines. Its working temperature range can be from -200 ℃ to 800 ℃, and the working pressure range is between 0 and 40 megapascals.
Metal wrapped gasket 304 316L
Octagonal gasket is a solid metal gasket made of metal material through forging, heat treatment, and mechanical processing. It has a radial self tightening sealing effect, mainly relying on the contact between the gasket and the inside and outside of the flange trapezoidal groove to achieve sealing. The characteristics of octagonal gaskets include high temperature and high pressure resistance, long-lasting sealing performance, and the ability to adapt to working conditions with fluctuating pressure and temperature.
Scope of application
Industrial pipelines: commonly used for flange connections of high-temperature and high-pressure steam, gas, and solvent pipelines, such as steam pipelines in power plants and high-pressure gas pipelines in chemical enterprises.
Pressure vessels: can be used for sealing tower tanks and pressure vessels, such as flange connections in reaction vessels and distillation towers.
Mechanical equipment: suitable for high-speed joint surfaces, high-temperature and high-pressure valves, covers and other parts, such as cylinder heads of compressors, inlet and outlet valves of high-pressure pumps, etc.
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Oil and gas industry: Octagonal gaskets are used to seal key parts of wellhead equipment and Christmas trees in the oil and gas industry, ensuring sealing and reliability in high-pressure environments.
Metal wrapped gasket 304 316L
Product Introduction
Structure and principle: Octagonal gasket is made of metal material through forging, heat treatment, and mechanical processing. Its cross-sectional shape is octagonal and it is a standard R-shaped metal ring gasket. It is installed in the trapezoidal ring groove on the flange surface. When tightening the connecting bolts, the octagonal gasket is compressed axially and tightly adheres to the trapezoidal groove, causing plastic deformation to form a sealing band. After the pressure is increased, the medium pressure causes the ring gasket to expand radially and fit more closely with the trapezoidal groove slope, producing a self tightening effect. However, because it is also affected by flange and bolt deformation, it belongs to a semi self tightening seal.
Material selection: Common materials include carbon steel, stainless steel 304, 316, etc. Pure iron, aluminum, copper, nickel based alloys, etc. can also be selected according to specific working conditions. The selected material hardness should be 15-20HB lower than the flange surface.
Performance characteristics: It has the characteristics of high temperature and high pressure resistance, and can work in the temperature range of -200-800 ℃ and the pressure range of 2.0-42 megapascals. The seal is durable and reliable, and it can adapt to working conditions with pressure and temperature fluctuations.
Compared with other gaskets: Compared with the elliptical ring gasket, the octagonal gasket mainly matches the flange groove by surface contact. Although it is not easy to achieve a tight fit with the flange groove, it can be reused, and because the cross-section is composed of straight lines, it is relatively easy to process.
