... washers: material:copper,bronze,steel,brass etc. size:m5,m6,m8,m10,m12,1/4",1/8" shape:flat ... pressure resistance, applicable to super low temperature. The copper washer is used in machinery fields. It ... is closed in all kinds of the valves.Temperature in the high-situation can still guarantee good ... mechanical properties. We can supply you the softened copper, and it can be bended with ...