Flange gaskets are essential for sealing flange connections in piping systems. These gaskets are circular rings made of materials capable of undergoing plastic deformation and possessing a certain level of strength. Most gaskets are cut from non-metallic sheets or manufactured to standard dimensions in specialized factories. Common materials used for gaskets include asbestos rubber sheets, asbestos sheets, PTFE (polytetrafluoroethylene) sheets, and polyethylene sheets. Additionally, there are metal-clad gaskets, which are made by wrapping non-metallic materials such as asbestos with thin metal sheets like galvanized iron or stainless steel.
Depending on the required pressure ratings, flange gaskets are available in various materials, ranging from low-pressure asbestos gaskets, high-pressure asbestos gaskets, and PTFE gaskets to metal gaskets. Flange connections are convenient to install and can withstand significant pressure. These connections are widely utilized in industrial piping systems, providing reliable sealing to ensure the normal operation and safety of the pipelines.