PTFE Joint Sealant is a 100% expanded PTFE gasket material. It comes in a soft, pliable ribbon with a self-adhesive tape applied to one side. It is a tough, flexible and economical universal gasket that replaces cut gaskets in a variety of regular and service applications. PTFE joint sealant will not deteriorate with age. It is unaffected by common chemicals, will withstand pressures up to 3,000 psi and temperatures -450º F to +600º F (-268º C to +316º C). This unique material is highly compressible and will fill severe irregularities in sealing surfaces.