High temperature and high pressure anti -corrosion high performance self sealss carbon packing ring

The utility model relates to a high temperature and high pressure anti -corrosion high performance self sealss carbon packing ring, it encircles the body including carbon packing, and the inboard of carbon packing ring body has a self sealss protective layer, and the self sealss protective layer is formed by refractory metal net and the alternate winding in high temperature resistant graphite area through preserved handle. The utility model provides a this volume density of carbon packing ring is even, can guarantee that whole drilled packing ring does not have the hidden danger point of leakage to its joining has phosphorus, magnesium, aluminium, a sodium element, greatly reduced the oxidation rate in the oxidation environment, make its resistant high temperature oxidation resistance performance obtain improving, through the setting of carbon packing ring body inboard self sealss protective layer, the volume atrophy of carbon packing ring under high temperature high pressure operating mode can alleviate effe