Metal spiral wound gaskets metal tape wound gaskets types: basic type, with inner and outer rings, only outer ring, only inner ring natural graphite powder is mainly used for refractory materials, anti-oxidation covering materials of smelting furnaces, thermal insulation materials, stabilizers for industrial pyrotechnics, desulfurizers for smelting industry Chemical fertilizer industry catalyst and production of pencil lead. Flexible graphite products have excellent sealing performance, with rebound rate of 20-30%, compression rate of 25-31%, no softening point and melting point of 3790 ℃. The friction coefficient is very low (0.08-0.12), which is resistant to acid and alkaline corrosion, so it can meet the requirements of mechanical seals. Products include flexible graphite plate, flexible graphite sealing ring, flexible graphite packing, flexible graphite corrugated belt, etc.