We are a professional manufacturer of Hydraulic fittings, and specialized in making Hydraulic hose fittings Hydraulic adapters, Hydraulic couplings, Hydraulic ferrule, Hydraulic flange and so on. Name: Hydraulic Adapter Description: Metric Male O-ring Part N.: 1E Material: Carbons teel Cover: Zinc Plated Alternative color: Silver white/ Blue white/ Yellow. We are a professional manufacturer of Hydraulic fittings,and specialized in making Hydraulic hose fittings Hydraulic adapters, Hydraulic couplings, Hydraulic ferrule, Hydraulic falnge and so on . and we can also produce whatever you want if you could provide us with drawings, including custom cnc machining, cnc machined parts, non-standard machine parts in steel , stainless steel, brass. If you have special requirement on the material, tolerance, process, treatment, equipment or test, Just feel free to contact us, and we will try our best to meet your needs.