This pack includes 10 pieces of 8x20x2 mm copper washers designed as solid gaskets for sump oil seals and other small sealing applications. The copper material provides a reliable seal when compressed between mating surfaces and resists oil exposure. Each washer is manufactured to precise dimensions to ensure a consistent fit and sealing performance. Key Benefits Reliable seal: copper crush washers form a tight, leakresistant gasket when compressed between surfaces. Oilfriendly material: copper offers good compatibility with engine and gear oils commonly used in sump seals. Precise sizing: exact 8x20x2 mm dimensions for predictable fit with compatible hardware. Costeffective pack: 10 pieces per pack for easy maintenance and replacement. Key Attributes Functionality: serves as a gasket/washer for oil sump seals and related connections. Compatibility: suitable for applications needing an 8 mm inner diameter, 20 mm outer diameter, and 2 mm thickness copper washer. Size: 8x20x2 mm. Material: Copper. Performance: solid gasket that provides a dependable seal in oil systems and similar fittings. Applications and Use Cases Automotive engine oil sump drain plug sealing, replacing worn copper washers to prevent leaks. Motorcycle oil sump or gear oil drain plug sealing where an 8x20x2 mm copper washer is suitable. Small hydraulic fittings and connections that require a copper washer gasket with the 8x20x2 mm dimensions.