The Spiral Wound Gasket consists of a spirally wound, beaded metal strip made from stainless steel 1.4541. A PTFE soft material strip [unsintered] protruding on both sides is inserted between the individual windings.The inner and outer support ring [inner ring: 1.4541, outer ring: carbon steel, corrosion protected] stabilize the spiral, while the outer ring also ensures the centering between the flange bolts.Spiral Wound Gaskets are particularly suitable for applications with high operating pressures and critical operating conditions [e.g. alternating loads].