... and the competitive prices 2.short delivery Lip Seal PTFE Gasket PTFE Gasket TypeFlat Gasket,white,natural,Graphite filled,Cooper powder ... Shanghai Tianjin Qingdao ApplicationGaskets are used to seal steel, glass-lined steel, and FRP piping in chemical-process piping. Designed ... they are ideal for standardizing gasket material across steel, glass-lined steel, and FRP systems - any application in which a ...