... Gasket 3.Standard or Nonstandard:Standard 4.OEM Service:Available High Accuracy Brass Copper Bronze WashersBrass Copper Bronze Washers Specifications1) Standard ... ISO,ASME/ASTM,JIS,BS,non standard,etc 2) Material:Brass,copper,bronze(H59,H62,H683) High quality, high precision ... ,and can product the different copper washer professionally ,OEM service is available .Please tell us the drawing or your ...