... ,API,CE,BV ANSI B18.21,ASME B16.21,DIN127 ,JIS steel flat gasketType: Spiral wound gasket, oval RTJ, Octagonal RTJ, ... : DIN127B / DIN7980 / BS1802 / ANSI/ASME B 18.21.1 / JIS B 1251 Features: BS, ANSI/ASMI, DIN, JIS2. Specification: No ... 7980 5. Specification: 3mm~36mm Standard: JIS B 1251 Surface processing, material (special steel, stainless steel, copper and so on) or other specifications ...