Pure White PTFE Gasket / Reinforced PTFE Gasket 1.carbon, graphite and glass fiber can be filled 2.Sizes:According ... needs of various piping materials, they are ideal for standardizing gasket material across steel, glass-lined steel, and FRP systems - any ... application in which a non-metallic gasket can be used. Pure White PTFE Gasket / Reinforced PTFE Gasket1.carbon, graphite and glass fiber can be ...