washers and gaskets made of copper,brass,aluminum,steel material Standard:DIN125,DIN127,ISO,ASME,JIS,BS all sizes available ... COPPER WASHER/COPPER GASKET1. Material:copper,brass,aluminum,steel2. Standard:DIN125,DIN127,ISO,ASME,JIS ... deposit10. OEM service can be available if required copper washer/gasket