high quality welded o rings 1.Design and Engineering Excellence. 2.Fabricate Full Range of Metal Materials. Item high quality welded o ringsMaterialStainless Steel, Cold Rolled Steel, Aluminum, Brass, Copper, Gilding, Bronze, Kovar, Glass Sealing Alloys 42,52, NiFe 48, Nickel, Preplated materials such as Electro-Tin, Nickel, Electro-Zinc plated Steels, Titanium, Clad Materials such as Zinc Clad ...