These are sheet gaskets made of VALFLON™ (PTFE) with excellent chemical resistant and non-stick properties. VALFON™ Soft Sheet - Valqua® No. 7GP61S. This highly flexible sheet has a specially made mesh construction. Features: Highly flexible sheets, Excellent chemicals resistance , Heat resistance. Temperature: -240 to 260oC / -400 to 500oF, Pressure: Max 2 MPa, Suitable fluids: General fluids (water, steam, oil, etc.), solvents, corrosive liquids, Applications: Pipe flanges, valve bonnets, towers & tanks. The ring molded article supports JPI (ASME / ANSI).