ss304,ss316,ss31803 316L with inner ring and outring graphite tape,PTFE tape spiral wound gaskets semi-metallic gasket Sprial wound gasketDescription:Spiral-Wound gasket is formed of V-shaped metallic stripe and soft non-metallic filler by means of piled, spiral wound and connected its end and beginning by dot welded. Depend on its excellent compression resilience it is suitable for sealing spots ...