This pack contains 10 pieces of Copper Washer Solid Gasket Sump Oil Seal designed for sealing oil sump drain plugs and related connections. Each washer is manufactured to a precise 18x25x2 mm size to deliver a reliable seal in a variety of applications. Key benefits Reliable oil sealing: Copper washers crush and conform to mating surfaces to create a tight, leak seal at the drain plug or similar fittings. Heat and oil resistance: Copper maintains its sealing performance under engine temperatures and exposure to oil. Precision size: Inner diameter 18 mm, outer diameter 25 mm, thickness 2 mm ensures compatibility with common drain plug seats. Economical pack: 10 pieces per pack for easy replacement during service and maintenance. Easy installation: Use a fresh washer on reassembly to ensure sealing and proper torque. Product specifications Material: Copper Type: Solid gasket / crush washer Size: Inner diameter 18 mm, outer diameter 25 mm, thickness 2 mm Pack quantity: 10 pieces Applications: Sump oil seal and drain plug gasket applications Performance: Suitable for oil systems and temperature environments; copper construction provides dependable sealing with longterm durability Compatibility and use Designed for automotive and mechanical applications that require a copper crush washer in an 18x25x2 mm size. Commonly used for engine oil sump drain plugs, gear oil drain plugs, and similar connections in vehicles and equipment. Applicable to cars, motorcycles, generators, and other machinery that specify this washer size. Typical use cases Replacing the drain plug gasket on a car engine oil sump to prevent oil leaks. Replacing the oil drain plug gasket on a motorcycle or small engine to ensure a proper seal. Servicing generators or other equipment with oil sumps that use 18x25x2 mm copper washers for drain plug seals. Installation notes Use a copper washer for each service to achieve sealing. Torque the drain plug to the manufacturer's specification after installation to ensure proper compression of the washer. Do not reuse a deformed washer, as it may not seal effectively. This description conveys the product's brandaligned features and specifications, including pack size, material, precise dimensions, and practical applications, while presenting clear guidance for installation and use.