Spiral wound gaskets are constructed with alternating components of formed metal wire and soft filler material. This forms a very effective seal when under proper flange compression. The metal strip has a V-shaped crown which gives the spiral wound gaskets increased resiliency under varying conditions. The wire materials and fillers can vary in order to meet the compatibility requirements of different chemical environments. Gasket construction and dimensions can be modified to provide an effective seal when available compression bonds are limited. Spiral wound gaskets may have a centering ring and/or an inner ring. The outer centering ring aids in locating the gasket on the flange. The inner ring gives the gasket additional radial strength. It also helps to reduce flange erosion and protect the sealing element. Spiral wound gaskets are widely used throughout refineries, chemical processing plants, power generation, aerospace and other applications requiring a strong, resilient seal. New applications continue to be added with increasing environmental regulations and industry requirements.

APG, 7GSW4A0050IR, Spiral Wound Gasket, Series: Style 7GSW4, 1/2 in Nominal, 0.75 in ID, 1.88 in OD, 0.125 in Thickness, 0.175 in Width, Class: Class 150, -320 to 975 deg F, 304 Stainless Steel/Graphite

• https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/APG_13850FF125B0150FC_Catalog_N.pdf https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/APG_13850FF125B0150FC_Catalog_N.pdf