Envelope gaskets are produced with pure PTFE with a thickness of 0.5 mm. Envelope gaskets have become popular for their special features that enables them to be is used in severely corrosive services, excellent creep resistance and high deformability. The PTFE makes the envelope gasket suitable for use in the chemical, pharmaceutical and food industry. PTFE Envelope Gasket is of two types:1. Slit Type2. Milled Type