... condition; Gasket seal___Graphite spiral wound gasket: Uses expanded graphite tape as the filler material , which provides superior ... temperature, high pressure, cryogenic temperatures,heat cycles, and temperature cycles.Material: V-shaped or W-shaped ... 316L, etc.C. Nonmetal belt: flexible graphite, tailor-made graphite, PTFE and asbestos paper. Graphite spiral wound gasket(gasket seal, spiral gasket) ...