High temperature services are one of the more challenging applications for mechanical seals. High Temperature Fabric Bellows/Glass/Ceramic Fabric Bellows are used where there is continues high temperature application i.e. near furnaces. This materials with Stand temp up to 1200 C to 2000C and totally fireproof Standard materials are polyester woven with polyurethane coating. A wide range of different fabrics are available for special applications, for example - Preotex. Kevlar/Aramid fabric for high temperature applications up to 600 C e.g. laser, plasma or welding machines and Teflon coated for grinding applications.
SRC: avbellows.com