5-Pack 2mm Copper Washers M6–M20 | Marine & DIY Gaskets
5-Pack 2mm Copper Washers M6–M20 | Marine & DIY Gaskets
5-Pack Copper Washers – 2mm Thick | M6 to M20 Sizes
Whether you're working on plumbing, automotive, marine, or general metalworking projects, these solid copper washers deliver a reliable, leak-free seal every time. Each set includes 5 precision copper gaskets with a uniform 2mm thickness, available in a wide range of thread sizes from M6 through M20 — making them a versatile addition to any toolbox or workshop.
Made in Mainland China.
Why Choose Copper Washers?
- Excellent Sealing Performance: Copper's natural malleability allows it to conform tightly under compression, creating a dependable seal against fluids and gases.
- Corrosion Resistance: Ideal for marine environments and wet or humid conditions where rust-prone materials fail quickly.
- Wide Size Range: One listing covers M6, M8, M10, M12, M14, M16, M18, and M20 — select the size you need.
- 2mm Uniform Thickness: Consistent thickness ensures proper torque and flush fitment across all supported bolt sizes.
- CE Certified: Meets applicable European conformity standards for quality and safety.
- Multi-Application Use: Suitable for plumbing joints, engine applications, marine hardware, hydraulic fittings, and DIY metalworking projects.
Product Specifications
| Material | Copper |
| Thickness | 2mm |
| Sizes Available | M6, M8, M10, M12, M14, M16, M18, M20 |
| Quantity | 5 pieces per pack |
| Certification | CE |
| Customized | Yes |
| Origin | Mainland China |
Great Pairing for Your Workshop
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Frequently Asked Questions
Q: What sizes are available for the 2mm copper washers?
A: These copper gaskets are available in sizes M6, M8, M10, M12, M14, M16, M18, and M20. Each pack contains 5 washers of your chosen size, all at a consistent 2mm thickness.
Q: Are these copper washers suitable for marine or underwater applications?
A: Yes! Copper's inherent corrosion resistance makes these washers an excellent choice for marine hardware, boat fittings, and other wet or saltwater-exposed environments where standard steel washers may corrode over time.
Q: Can these washers be used for plumbing and engine applications?
A: Absolutely. These 2mm copper gaskets are widely used in plumbing joints, hydraulic fittings, engine drain plugs, and general metalworking or DIY projects. Their malleability ensures a tight, leak-resistant seal under compression.