PTFE gaskets are still a commonly used method of sealing between flange faces in pipelines, distillation columns, reactor vessels, etc.A PTFE envelope gasket incorporating an insert of compressible material, combining the chemical resistance of PTFE with the resilience of the selected insert. This combination provides a gasket that us capable of compensating for irregularities, which are often present in flanges, particularly those with a very large diameter.

PTFE Gasket