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Compressed asbestos gasket is a compressed mixture of long fiber asbestos, synthetic rubber and other modifying materials. According to different formulations, processes and usages, it can be divided into standard and oil-resistant. According to working temperatures and pressures, it can be also classified into low, medium and high pressure. They are all available for sealing steam, water, inert gas, oils and other non-aggressive mediums. Asbestos gasket is die cut or circle cut from paronite or jointing sheets. Various special specifications are at stock and we can fabricate custom gaskets.
Non-Asbestos Fibre materials are so-called because they fill the gap in the range of gasket materials previously occupied by asbestos. Asbestos, although considered to be a dangerous material, had excellent heat resistance properties, which is why it was utilised so widely in high temperature applications. When asbestos was outlawed, replacement materials were needed; so these asbestos-free, or non-asbestos, materials were developed to perform the same function, but without the corresponding problems. These materials are now commonly comprised of aramid fibre, carbon and other non-organic fibres, which are in turn blended with different polymers to meet different applications: most commonly nitrile rubber, for fuel and oil resistance. These materials can also be graphite coated for non-stick and steam resistance, mixed with PTFE for excellent chemical resistance or with EPDM for potable water applications.
