... sealing; 2.Packaging:sealed plastic bags and carton box. Flexible Graphite Packing1.Material:Braided by low-sulphur expanded graphite ... reactor, paper plant, power plant, oil refinery. And valve, pump, expansion joint, mixer, etc. which need to effective seal. ... easy for liquid leakage at the connections of centrifugal pump, reciprocating pump, valve, pipeline and other sections of petroleum, chemical ...