Copper Washer Gasket Kit 50–120 Pcs | M4–M14 Flat Ring Seals
Copper Washer Gasket Kit 50–120 Pcs | M4–M14 Flat Ring Seals
Copper Washer Gasket Assortment Kit – M4 to M14 | 50, 100 & 120 Piece Sets
Keep your plumbing, automotive, and metalworking projects leak-free with this comprehensive Copper Washer Gasket Assortment Kit. Available in 50, 100, and 120-piece sets, this kit includes flat ring seal washers in a range of standard metric sizes — M4, M5, M6, M8, M10, M12, and M14 — making it a must-have for workshops, garages, and toolboxes.
Made from high-quality pure copper, these washers provide excellent sealing performance, corrosion resistance, and durability under high pressure and temperature conditions. Whether you're sealing oil drain plugs, hydraulic fittings, fuel lines, or plumbing connections, these gaskets deliver a reliable, long-lasting seal every time.
Made in Mainland China.
Key Features
- ✅ Wide Size Range: Includes M4, M5, M6, M8, M10, M12, and M14 flat ring seals to cover most metric applications
- ✅ Premium Copper Material: Excellent thermal conductivity, corrosion resistance, and sealing capability
- ✅ Multiple Quantity Options: Choose from 50, 100, or 120-piece kits to suit your project needs
- ✅ Organised Storage Box: Comes with a dedicated compartment box so you can easily find the right size every time
- ✅ Versatile Use: Ideal for sump plugs, oil drain bolts, hydraulic lines, plumbing, and general metalworking applications
- ✅ DIY & Professional Grade: Perfect for home mechanics, tradespeople, and hobbyists alike
Specifications
| Material | Copper |
| Sizes Included | M4, M5, M6, M8, M10, M12, M14 |
| Kit Quantities | 50 / 100 / 120 Pieces |
| Type | Flat Ring Seal / Gasket Washer |
| Storage | Included compartment box |
| Application | Sump plug, oil drain, hydraulic, plumbing, metalworking |
| Country of Origin | Mainland China |
What's in the Box?
- 50, 100, or 120 copper flat ring washers (depending on kit selected)
- Organised multi-compartment storage box
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Frequently Asked Questions
Q: What sizes are included in the copper washer assortment kit?
A: The kit includes flat ring seal copper washers in sizes M4, M5, M6, M8, M10, M12, and M14, covering the most commonly used metric washer sizes for automotive, plumbing, and general metalworking applications.
Q: Are these copper washers suitable for oil drain plugs and sump applications?
A: Yes! These copper washer gaskets are specifically designed for use with oil drain plugs, sump bolts, hydraulic fittings, and fuel line connections. Copper is an ideal sealing material for these applications due to its excellent compressibility and resistance to heat and corrosion.
Q: Does the kit come with a storage box?
A: Absolutely. Every kit includes a multi-compartment storage box to keep all sizes neatly organised and easy to access, whether you're in the workshop or out in the field.
Q: Which kit size should I choose — 50, 100, or 120 pieces?
A: If you're a casual DIYer or only need a top-up supply, the 50-piece kit is ideal. For professional mechanics or those who regularly work on multiple vehicles or plumbing systems, the 100 or 120-piece kit offers better value and ensures you always have the right washer on hand.