The main products of rubber gaskets include silicone gaskets, nitrile rubber gaskets, fluororubber gaskets, and more. Silicone has outstanding temperature resistance, maintaining good application elasticity within the temperature range of -70°C to +260°C, and is resistant to ozone and weather aging. Manufacturers of graphite metal spiral wound gaskets consider it suitable for use as sealing gaskets in thermal machinery.
It also possesses excellent characteristics such as moisture resistance, flame retardancy, heat resistance, electrical conductivity, and oil resistance, making it widely used in machinery, electronics, plumbing, and various other fields. Nitrile rubber is a polymer produced through emulsion copolymerization of butadiene and acrylonitrile. It is renowned in the rubber industry for its excellent oil resistance, good abrasion resistance, aging resistance, and sealing properties.
Rubber gaskets are resistant to high temperatures, oil, and corrosion. They are generally used in high-temperature, high-vacuum, and high-pressure environments, as well as in oil environments, and are widely used in sectors such as crude oil, chemicals, and aerospace. Other rubber gaskets include special rubbers such as chloroprene rubber, natural rubber, ethylene propylene diene monomer (EPDM) rubber, and acrylate rubber.
The main performance parameter of rubber gaskets, abbreviated as WMQ for rubber gaskets, highlights silicone's outstanding temperature resistance, maintaining good elasticity within the temperature range of -70°C to +260°C, and its resistance to ozone and weather aging. It is suitable for use as sealing gaskets in thermal machinery. Due to its non-toxic nature, it can be used to manufacture thermal insulation, insulation products, and medical rubber products.
Standard R-type ring gaskets are manufactured according to API 6A and ASME B16.20 standards, with a maximum application pressure of 10,000 PSI. Octagonal and elliptical gaskets can be interchangeable in trapezoidal groove flanges. The RX type of irregular metal spiral wound gaskets is suitable for standard R-type ring gaskets with enhanced pressure and is applicable to the same flange groove raised surface as the R-type. BX is suitable for pressure systems with an application pressure of up to 150,000 PSI.
A variety of materials and methods are applicable to different design and operational requirements, as referenced in the material characteristics table. Note: The material strength of elliptical gaskets should be 15~20 HB less than the flange surface, and it is recommended not to reuse them. The applicable specifications for elliptical gaskets are: ANSI B16.5-1973, JPI-75-15-70, GB699, GB1220, JB755, HG2033-97. The key method for metal elliptical gaskets is the R-type, and the specifications for elliptical metal ring gaskets are used for the grooves of flanges.
