This set includes 10 pieces of copper washer solid gaskets designed for sump oil sealing. Each washer is sized for a 9x16x2 mm application, with an inner diameter of 9 mm, an outer diameter of 16 mm, and a thickness of 2 mm. Key benefits Reliable seal for oil sump and related fittings that require copper washers Malleable copper material that conforms to mating surfaces to help fill minor surface imperfections Corrosion resistant and suitable for oil environments Costeffective replacement option for maintaining fluid sealing integrity Product attributes Material: copper Type: solid gasket / copper washer Size: inner diameter 9 mm, outer diameter 16 mm, thickness 2 mm Quantity: 10 pieces per pack Compatibility: designed for 9x16x2 mm sealing applications in automotive, motorcycle, and light mechanical systems Why you need it Provides a dependable metaltometal seal in oil systems where a copper washer is specified Helps prevent leaks at drain plugs, fittings, and similar connections that require a copper sealing washer An economical solution to worn or damaged gaskets during service or maintenance Applications and use cases Automotive oil sump drain plug seals or similar oil sealing interfaces that require a 9x16x2 mm copper washer Motorcycle or small engine oil sumps and related fittings Hydraulic or plumbing connections where a copper sealing washer of 9x16x2 mm size is specified Installation and care tips Clean all mating surfaces before installation Install a copper washer with each reassembly to ensure sealing integrity Do not reuse deformed or damaged washers Store in a dry place to minimize oxidation and corrosion prior to use This product stays true to the stated specifications and provides a practical, reliable sealing solution for oil sumps and related applications.