10PCS/Pack Copper Washer Solid Gasket Sump Oil Seal, size 8x12x2mm Key benefits Reliable oil sealing: copper washer gaskets provide a solid seal for oil sump and related fittings, helping to prevent leaks. Corrosion and heat tolerance: copper material offers natural resistance to corrosion and good performance in oil and engine environments. Durable, reusable design: solid gasket construction delivers consistent compression and longterm sealing for routine maintenance. Key attributes Material: copper Size: 8x12x2 mm Quantity: 10 pieces per pack Type: washer gasket for sump oil seals Function: seals oil sump, drain plugs, and similar fittings where a copper washer is specified Performance: designed for reliable sealing under typical automotive, motorcycle, and machinery oil system conditions Compatibility and applications Automotive oil drain plug seals and oil sump connections Motorcycle engine oil sump or lubrication fittings Small machinery or equipment oil systems that require a copper washer gasket Use cases Replacing a worn oil drain plug washer during an engine oil change to prevent oil leaks Sealing a sump connection on a motorcycle engine or transmission sump that specifies copper washers Serving as the sealing component in small hydraulic or fuel line fittings where copper washers are recommended Notes Pack contains ten 8x12x2 mm copper washers suitable for standard sump oil seal applications. Use as specified by your equipment manufacturer.