This pack includes 10 copper washers designed as solid gaskets for sump oil seals and related bolt assemblies. Each washer measures 8x12x2 mm (inner diameter 8 mm, outer diameter 12 mm, thickness 2 mm). Made from solid copper, these washers are intended to provide a reliable seal in oilcontaining systems where a crush washer is required. Key benefits Reliable oil seal: Copper crush action creates a tight, leak seal between the drain plug or bolt and its mating surface. Durable in oil environments: Copper offers good corrosion resistance and compatibility with petroleumbased fluids. Readytouse pack: 10 pieces per pack ensures you have replacements on hand during maintenance. Easy installation: Thin, flexible copper allows for consistent sealing when torqued to specification. Key attributes Material: Copper (solid gasket) Size: 8x12x2 mm (inner diameter 8 mm, outer diameter 12 mm, thickness 2 mm) Type: Washer / gasket for sump oil seal (crush washer) Quantity: 10 pieces per pack Compatibility: Designed for applications using an 8 mm drain plug bolt or similar 8 mm bolt connections in oil systems Applications Automotive engine oil pan drain plug sealing on vehicles that use an 8 mm drain bolt Motorcycle engine drain plug sealing Small engines and equipment (lountains, generators, and other machinery) that employ 8 mm drain bolts for oil drainage Installation and usage tips Use a washer for each service; reusing deformed washers can lead to leaks. Pair with the correct torque spec for your engine or equipment to ensure a proper seal. Store in a dry environment to prevent any oxidation prior to use. Notes These copper washers are intended for singleuse sealing. Inspect for deformation before installation and if the washer is bent or flattened beyond its intended crush. This product aligns with typical 8x12x2 mm copper sump oil seal applications, providing a practical, reliable sealing solution for automotive, motorcycle, and smallengine maintenance.