Seamaka 360PCS Copper Crush Washers Kit – 18 Sizes for Oil Drain Plugs (M6–M24)

Seamaka 360PCS Copper Crush Washers Kit

Designed for reliable sealing in everyday maintenance, this copper crush washers kit offers a broad size range and durable performance to support automotive, electrical, and marine projects. The set is built to withstand challenging conditions while remaining easy to use in busy workshop environments.

Material and durability

Crafted from copper, these washers resist corrosion and oxidation, performing well in high-temperature engine bays, cold weather, and humid settings. The copper composition supports steady sealing and a long service life across varied applications.

• Excellent sealing performance and long service life
• Reduces friction between fasteners and helps distribute load
• Prevents leaks and looseness in threaded connections
• Withstands heat and moisture without rapid degradation

Storage and identification

The kit arrives in a transparent storage box with clearly labeled compartments, making it quick to locate the correct size during a repair and helping keep the workspace organized.

• Size labels aid fast sorting and selection
• Compact organization saves time in busy workflows

Versatility and usage

Widely applicable to automotive, electrical, and marine connections, it supports oil pans, oil pipes, hydraulic fittings, and related components. This assortment helps you handle common sealing tasks with flexibility and confidence.

• Ideal for oil drainage and gasket replacements
• Useful for maintenance tasks across vehicles and equipment

What you get

360 washers across 18 sizes, covering M6 through M24. The kit includes approximately 80 pieces each for M6 and M8, 70 for M10, 40 for M12, 25 for M14, 20 for M16 and M18, 10 for M20 and M22, and 5 for M24. All are organized in the labeled box for quick access.

• M6: 80 pieces
• M8: 80 pieces
• M10: 70 pieces
• M12: 40 pieces
• M14: 25 pieces
• M16: 20 pieces
• M18: 20 pieces
• M20: 10 pieces
• M22: 10 pieces
• M24: 5 pieces
• Transparent storage box with size labels

Seamaka offers a practical, ready-to-use solution for sealing tasks. While results vary by application, the kit provides a flexible set of components, organized storage, and a durable copper material designed for broad compatibility in maintenance work.