... petrochemical industry Huahai sealing--Specialized gasket supplier API BX & RX gasketstandardised production used in petrochemical industry Huahai sealing--Specialized gasket ... supplier 1.type: R,BX,RX,IX 2 shape: octagonal, oval, lens 3 .size: ... .20 HG20612 HG20633 Material: carbon steel, soft iron, inconel600, M-400, C-276, Incoly825, 321, 347,316,304,Gr. ...