High quality graphite products comprise rings, strips,yarns, gaskets, wire. Customer's size ... static sealing for pump, valve power industry, chemical industry etc.Technical index AshSulfur content(ppm)Chlorine&Flourin(ppm)Density(g/cc ... .8≥10≤12(450°C) burnt 3 hours All kinds of graphite packing rings, strips,yarns, spiral wound gaskets and wire etc ...