These copper washers are precision machined solid gaskets designed for oil sump sealing. The 10 piece pack provides ready to use seals for multiple drain plugs and fittings. Key attributes Material: Copper Type: Solid gasket / crush washer Size: 9x14x2 mm (inner hole 9 mm, outer diameter 14 mm, thickness 2 mm) Quantity: 10 pieces per pack Function: Forms a tight oil seal when used with compatible drain plugs and fittings Performance: Copper washings offer good sealing under oil and moderate heat, with corrosion resistance suitable for automotive and machinery environments Compatibility: Suitable for applications requiring 9x14x2 mm copper washers for oil sump and related fittings Use cases Automotive engine oil sump drain plug seal setups Oil pan bolt seals in cars, light trucks, motorcycles, and other motorized equipment Sealing fittings on small engines, generators, and other machinery that use copper washer crush seals Installation guidance Ensure mating surfaces are clean and of oil residue Use a copper washer for each drain or seal to guarantee proper sealing Do not overtighten beyond the recommended torque to avoid excessive deformation These washers provide a reliable, compatible solution for sealing oil sump and related fittings where a 9x14x2 mm copper washer is required.