Copper Washer Gasket Set 50/100/120 Pcs Flat Ring Seal Kit
Copper Washer Gasket Set 50/100/120 Pcs Flat Ring Seal Kit
Copper Flat Washer Gasket Assortment Kit — 50, 100, or 120 Pieces
Keep your projects sealed tight with this versatile copper flat washer assortment kit. Whether you're a seasoned mechanic, a DIY enthusiast, or a professional tradesperson, this multi-size set gives you the right washer for virtually any job — right when you need it. Available in three convenient quantities: 50, 100, or 120 pieces, all neatly organized in a sturdy storage box.
Why Choose Copper Washers?
- Superior Sealing: Red copper construction delivers excellent sealing performance for oil, fuel, and hydraulic connections.
- High Heat Resistance: Withstands demanding temperature environments found in engines, industrial machinery, and appliances.
- Excellent Conductivity: Outstanding electrical and thermal conductivity make these washers ideal for electrical and mechanical applications.
- Wear & Corrosion Resistant: High hardness and natural copper durability ensure long-lasting performance under repeated use.
- Pressure Distribution: Provides a larger bearing surface against screws, nuts, and bolts to reduce friction and evenly distribute load — helping prevent loosening over time.
- Wide Compatibility: Fits M4, M5, M6, M8, M10, M12, and M14 fasteners across automotive, household, marine, hydraulic, and electrical applications.
Size Breakdown by Kit
50-Piece Kit
- M4 × 8 × 1 mm — 10 pcs
- M5 × 9 × 1 mm — 10 pcs
- M6 × 10 × 1 mm — 10 pcs
- M8 × 12 × 1 mm — 5 pcs
- M10 × 14 × 1 mm — 5 pcs
- M12 × 16 × 1 mm — 5 pcs
- M14 × 18 × 1 mm — 5 pcs
100-Piece Kit
- M4 × 8 × 1 mm — 20 pcs
- M5 × 9 × 1 mm — 20 pcs
- M6 × 10 × 1 mm — 20 pcs
- M8 × 12 × 1 mm — 10 pcs
- M10 × 14 × 1 mm — 10 pcs
- M12 × 16 × 1 mm — 10 pcs
- M14 × 18 × 1 mm — 10 pcs
120-Piece Kit
- M4 × 8 × 1 mm — 30 pcs
- M5 × 9 × 1 mm — 30 pcs
- M6 × 10 × 1 mm — 20 pcs
- M8 × 12 × 1 mm — 10 pcs
- M10 × 14 × 1 mm — 10 pcs
- M12 × 16 × 1 mm — 10 pcs
- M14 × 18 × 1 mm — 10 pcs
Specifications
- Material: Red Copper
- Quantity Options: 50 / 100 / 120 pcs
- Packaging Size: 13 × 7 × 2 cm (organized storage box included)
- Color: Copper (as shown)
- Country of Origin: Made in China
Common Applications
These copper flat washers are widely used in automotive sump plugs and oil drain seals, household and commercial appliances, hydraulic fittings, fuel systems, marine hardware, and various electrical and industrial assemblies.
Important Notes
- Actual color may vary slightly from on-screen images due to monitor brightness and lighting conditions.
- Please allow for minor measurement tolerances in the stated dimensions.
You May Also Like
- 1pc Precision Japanese Double-Edged Hand Saw – SK5 Steel, Fine-Toothed for Carpentry and Gardening
- 10Pcs Wooden Handle Nylon Bristle Paint Brush Set – Hand Tool for Oil Painting, Dusting & Cleaning
- 1pc Professional Heavy-Duty Pruning Shears with Anti-Slip Handle Design
Learn more: OSHA on eye and face protection
Frequently Asked Questions
Q: What sizes of copper washers are included in this assortment kit?
A: The kit includes seven metric sizes: M4, M5, M6, M8, M10, M12, and M14 copper flat washers, all with a 1 mm thickness. Each size is available in varying quantities depending on whether you choose the 50, 100, or 120-piece kit.
Q: What are copper flat washers used for?
A: Copper flat washers are commonly used as sealing gaskets in oil drain plugs, fuel fittings, hydraulic connections, and various automotive and industrial assemblies. Their natural heat resistance and sealing properties make them a go-to choice for plumbing, marine, and mechanical applications.
Q: How does copper compare to standard steel washers for sealing purposes?
A: Copper is a softer, more malleable metal than steel, which allows it to compress slightly and form a tighter seal around fittings. This makes copper flat washers especially effective at preventing leaks in oil, fuel, and hydraulic systems where a reliable, leak-proof connection is essential.
Q: Does the kit come with an organized storage case?
A: Yes! All washers come neatly organized in a compact storage box measuring 13 × 7 × 2 cm, making it easy to sort, store, and find the right size quickly.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.