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Guangzhou JST Seals produces ID face seal and OD face seal for FLS valve from size 1 13/16 to 7-1/16 inch and for pressure from 2000Psi to 20,000Psi. JST provides ID face seals and OD face seals with two different materials for FLS and FLS-R valves. A common option is virgin peek spring powered by a stainless-steel spring. Another option is glass moly filled PTFE with stainless steel springs, whic...
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