10Pcs DIN7603 Copper Sealing Washers M12–M18 Crush Flat Seal
10Pcs DIN7603 Copper Sealing Washers M12–M18 Crush Flat Seal
Details
DIN7603 Copper Sealing Washers – M12 to M18 | 10-Piece Set
Keep your fittings leak-free with these precision-grade DIN7603 copper sealing washers. Engineered to crush and conform to mating surfaces, these flat seal rings create a reliable, long-lasting seal on bolts, drain plugs, oil fittings, boat hardware, and hydraulic connections. Pack of 10 gives you spares on hand whenever you need them.
Key Features
- Material: High-purity copper for excellent malleability and corrosion resistance
- Standard: DIN7603 — widely recognized sealing washer specification
- Sizes available: M12, M13, M13.5, M14, M16, M17, M18
- Thickness: 1.5 mm for consistent crush depth and secure sealing
- Quantity: 10 pieces per pack
- Versatile use: Suitable for boats, automotive drain plugs, hydraulic fittings, plumbing, and general mechanical assemblies
- Crush design: Deforms under torque to fill micro-gaps and prevent fluid or gas leaks
- Reusable-friendly: Soft copper construction allows careful reuse in low-pressure applications
Specifications
| Specification | Detail |
|---|---|
| Standard | DIN7603 |
| Material | Copper |
| Thickness | 1.5 mm |
| Sizes | M12, M13, M13.5, M14, M16, M17, M18 |
| Quantity | 10 Pieces |
| Brand | JARBLUE |
| Country of Origin | Made in Mainland China |
Common Applications
- Boat and marine drain plug sealing
- Automotive oil drain plugs and fuel fittings
- Hydraulic and pneumatic line connections
- Plumbing compression fittings
- General mechanical and industrial assemblies
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Frequently Asked Questions
Q: What sizes are included in this copper sealing washer set?
A: This 10-piece DIN7603 set is available in M12, M13, M13.5, M14, M16, M17, and M18 sizes, all at a thickness of 1.5 mm, making them suitable for a wide range of bolt and fitting sizes.
Q: Can these copper crush washers be used for marine and boat applications?
A: Yes. These DIN7603 copper sealing washers are well-suited for marine and boat drain plug applications, as well as automotive, hydraulic, and plumbing fittings where a reliable metal-to-metal seal is required.
Q: Are these washers reusable?
A: Copper crush washers are primarily designed for single-use sealing, as they deform under torque to fill surface gaps. However, in low-pressure or low-torque applications, careful reuse may be possible. For critical sealing applications, replacing with a new washer is recommended for best results.
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.
Materials + Care
We prioritize quality in selecting the materials for our items, choosing premium fabrics and finishings that ensure durability, comfort, and timeless appeal.
Shipping + Returns
We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.