The factory manufactures 10-inch (DN250) spiral wound gaskets rated for Class 150 LB service. These SW gaskets feature a stainless steel SS 304 inner ring for radial support, a carbon steel outer ring for compression stop and centering, and a SS 304 winding strip with flexible graphite (FG) filler for sealability. The multi-layer construction provides resilient, blowout-resistant sealing in flanged joints across varying temperatures and pressures, commonly used in oil, gas, and petrochemical piping systems.