These copper washers are solid gaskets designed for sump oil seal applications. Each washer provides a reliable seal for oil drain plugs and related fittings. The pack contains 10 pieces. Key benefits Reliable sealing: Form a crush seal between the drain plug and the sealing surface to prevent oil leaks. Copper material: Offers good corrosion resistance in automotive environments and provides a consistent seal under typical engine temperatures. Precise sizing: Outer diameter 28 mm, inner diameter 22 mm, thickness 2 mm to suit common drain plug interfaces. Simple replacement: Easy to install and during routine maintenance, helping to reduce oil leaks after service. Value pack: 10 pieces per pack for convenient, ongoing maintenance. Key attributes Material: Copper Type: Solid gasket Size: Inner diameter 22 mm, outer diameter 28 mm, thickness 2 mm Quantity: 10 pieces per pack Function: Sump oil seal, drain plug gasket Performance: Suitable for standard automotive oil sealing needs Specifications Outer diameter: 28 mm Inner diameter: 22 mm Thickness: 2 mm Quantity: 10 washers per pack Applications and compatibility Automotive engine oil pan drain plugs that require a 22x28x2 mm copper washer Motorcycle engine oil drain plugs with the same sizing Small engines and equipment that use drain plugs and seals matching 22x28x2 mm copper washers Usage guidance Place the washer between the drain plug and the sealing surface. Ensure the sealing face is clean and of debris before installation. with a washer whenever the drain plug is removed to maintain a proper seal and prevent leaks.