Ptfe gasket 1) sealing gasket for pumps and pipes, etc. 2) all sizes are available 3) new molds can be made according to customers' requirements 4) high chemical properties 5) wide temperature range from -180ípc to +260ípc 6) has the lowest coefficient of friction of all the known solid materials 7) not aging 8) nonstick All sizes are available on costomers' request