Benefits for STRESS SAVER® 6800 Economical More economical gasket where a PTFE envelope is not required Tighter Seal Raised, molded-in sealing rings seal with 75% less surface area for high performance in non-metallic flanges+ Media for STRESS SAVER® 6800 Water, very mild acids and caustics + Flat face flanges strongly recommended. Specifications for STRESS SAVER® 6800 Min. Temperature: -40 (° F) Max. Temperature: 300 (° F) Max. Pressure : 250 (PSI) Maximum PxT 1/8: 50,000 (° F x PSIG)