steel flat gasket 2.5mm-80mm CS&AS&SS&Rubber ISO9001:2000 ... ,CE,BV ANSI B18.21,ASME B16.21,DIN127 ,JIS steel flat gasketType: Spiral wound gasket, oval RTJ, Octagonal RTJ, Lens ... 36mm Standard: JIS B 1251 Surface processing, material (special steel, stainless steel, copper and so on) or other specifications can be designed ... plastics bag, then onto pallets,or color small box packing steel flat gasket