1,Material:PTFE 2 ,Factory direct sales,good price. 3.PTFE Seals gasket ,Can be customized according to customers' ... Teflon gasket for different corrosive conditions, heat exchanger.Filled Material reinforced:1) Graphite filled ,increase thermal conductivity, lubrication, ... various piping materials, they are ideal for standardizing gasket material across steel, glass-lined steel, and FRP systems - ...