Product Name: PTFE Envelope Gasket
Material: PTFE (Outer Jacket), Rubber (Filler)
Size: DN12-DN2000 mm
Pressure Range: 0 to 5 MPa
pH Range: 0 to 14
Temperature Range: -50°C to +260°C
The PTFE envelope gasket consists of a machined polytetrafluoroethylene (PTFE) outer jacket with a soft insert made from non-asbestos rubber, asbestos rubber, or general rubber materials. This design combines the excellent corrosion resistance of PTFE with the good compressibility and recovery of the inner filler, resulting in reduced bolt preload requirements. It is a cost-effective sealing solution for various industrial applications.
Source: https://www.magpievalves.com/ptfe-envelope-gasket-rubber-filler-dn12-dn2000-max-5-mpa.html