The Spiral Wound Gasket consists of a spirally wound, beaded metal strip made from stainless steel 1.4404. A PTFE soft material strip [unsintered] protruding on both sides is inserted between the individual windings.This gasket typehas no inner and outer support ring. They can be produced in several gasket thicknesses in order to be used also in tongue and groove connections in the range of common groove depths.
Spiral Wound Gaskets are particularly suitable for applications with high operating pressures and critical operating conditions [e.g. alternating loads].