A PTFE envelope gasket is a composed gasket. The product consists of an envelope of PTFE with an inlay. The envelope gasket is mainly applied as a flange gasket in applications where a high chemical and high pressure resistance is required.

PTFE Envelope gasketsare assembled and closed in an envelope of 100% pure PTFE and are used as seals on flanges, tanks, reactors and enamelled or vitrified surfaces. These gaskets can be produced in various shapes: ovals, circular, custom-made drawing, with corrugated ring and earth clips made of AISI 316 steel.