Instead of conventional asbestos filler, this type uses inorganic fibers and aramid fibres as a nonasbestos paper filler. Feature: 1. Asbestos fibers are used. 2. The service range(heat resistance, pressure resistance) is different from that of the asbestos SWG, but the sealing performance is almost the same. Applications: Suitable for use in piping flanges, pressure vessels, heat exchangers, valve bonnets, etc., in a variety of industries, especially in locations where asbestos is not allowed.