Gaskets are key components used for sealing, buffering or isolation. According to different materials and structures, gaskets can be divided into the following categories:
Non-metallic gaskets
Non-metallic gaskets are usually called soft gaskets and are suitable for low-pressure and medium-temperature environments. Common non-metallic gaskets include:
Rubber gaskets: Such as natural rubber, nitrile rubber, chloroprene rubber, etc., suitable for pressures below 6MPa and temperatures below 70°C.
Oil-resistant rubber gaskets: With excellent oil resistance, suitable for oily environments.
Asbestos gaskets: High temperature and corrosion resistance, but due to its carcinogenicity, it is gradually replaced by other materials.
PTFE gaskets: With extremely strong chemical stability and high temperature resistance, suitable for corrosive media and high temperature environments.
Graphite gaskets: With good compression resilience and high temperature resistance, suitable for high temperature and high pressure environments.
Semi-metallic gaskets
Semi-metallic gaskets combine the advantages of metal and non-metallic materials, with better sealing performance and pressure resistance. Common semi-metallic gaskets include:
Wrapped gasket: Suitable for high-pressure and high-temperature environments, and can withstand harsh conditions of up to 25.0MPa and 600℃.
Metal-coated gasket: Made of a combination of metal and non-metallic materials, it has good sealing performance.
Metal gaskets
Metal gaskets are made of metal or alloy materials and are suitable for high-pressure and high-temperature environments. Common metal gaskets include:
Flat gasket: Suitable for general high-pressure occasions.
Oval gasket and octagonal gasket: Suitable for sealing surfaces of special shapes.
Other special gaskets
Klinger gasket: A high-performance non-asbestos gasket with excellent heat and corrosion resistance, suitable for a variety of industrial fields.
Flexible graphite composite gasket: Combining the advantages of graphite and metal, it is suitable for high-temperature and high-pressure environments.
Summary: There are many types of gaskets, and the selection should be based on the specific application scenario, medium characteristics, pressure and temperature and other factors. PTFE gaskets, graphite gaskets, spiral wound gaskets, etc. are common high-performance gasket types.
