... coefficien,long life. expansion graphite stuffing ring, flexible graphite packing ring, graphite ring, pure graphitering, expanded graphite packing ring, packing ring, molded packing ring, a sealing packing ring, above the fillers ... ~2.0g/cm3Velocity0~15m/sPH range0~14SizeØ5~Ø1500mm Expansion Graphite Stuffing Ring,O Ring,Die-formed Graphite Ring