SPIRAL WOUND GASKETS
A spiral-wound gasket is made of alternate plies of V-preformed metal strip and soft filler that are tightly and spirally wound together. According to the need of the mating flange, the gasket is provided with an outer ring, an inner ring or both outer and inner rings. The outer ring serves as a compression stop, anti-blowout device, which properly centers the gasket on the flange. The inner ring acts as a compression stop and is used to fill the annular space between the flange bore and the gasket inside diameter to minimize turbulence of process fluids and erosion of flange faces. Class 900 to 2500 are generally provided with Inner and Outer ring to accommodate the high bolt load. Filler material are chosen as per operating media and Temperature.
Available in Low Stress design, Segmented Gasket and Oval, Elliptical shapes