... making ability spiral wound gasket with inner ring and outer ring Spiral wound gasket with inner ring/centering ringThe spiral wound gasket is made of ... products, acid, alkali,and salt solution,etc.Specification: SPIRAL WOUND GASKETJSD-2003 For static sealing of flange pipe, valve, vessel ... asbestos,non-asbestosStandard: ASME,ASNI,JIS, JPI, ISO, DN spiral wound gasket with inner ring and outer ring