... coefficien,long life. expansion graphite stuffing ring, flexible graphite packing ring, graphite ring, pure graphitering, expanded graphite packing ring, packing ring, ... oblique incision. Product Description: expanded graphite packing rings are made of pure flexible graphite paper, the planted scissors in ... 15m/sPH range0~14SizeØ5~Ø1500mm Expansion Graphite Stuffing Ring,O Ring,Die-formed Graphite Ring