Rubber gasket

mediumflangecompression

Asbestos gasket is a sealing material made of natural asbestos fiber as the main raw material, supplemented by rubber adhesive, filler and other reinforcing materials, through calendering or molding process. It was widely used in flanges, valves, heat exchangers and other connection parts in high temperature, high pressure and chemical corrosion environments in the 20th century. DESCRIPTION ✅ Main features of asbestos gaskets: 1. Excellent high temperature resistance Asbestos itself has good thermal stability. Generally, asbestos gaskets can withstand temperatures of 300℃~500℃ (depending on whether it is an asbestos rubber sheet product). Special asbestos gaskets can withstand higher temperatures for a short time, so they have been widely used in high temperature conditions such as steam, boilers, and hot oil. 2. High pressure resistance and good structural strength Asbestos fibers combined with rubber and other materials have good compression strength and shear resistance, and are suitable for medium and high pressure flange sealing. The pressure level of conventional products can reach 2~5 MPa, and high-level products are even higher. 3. Good chemical stability Asbestos has strong resistance to most chemical media such as acids, alkalis, oils, and organic solvents, and is particularly suitable for sealing applications in petrochemical and chemical pipelines. 4. Good softness and compressibility Asbestos gaskets are easy to fit with the flange surface during installation, and can compensate for certain surface unevenness or gaps caused by thermal expansion and contraction, thereby forming a reliable static seal.