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🔩 Seal it right, every time — the pro’s copper crush washer kit!
This 300-piece copper sealing ring assortment offers 12 metric sizes (M5-M20) crafted from high-quality red copper, ensuring exceptional heat resistance, conductivity, and corrosion protection. Designed to provide a tighter seal and prevent bolt damage, it’s perfect for automotive, marine, plumbing, and electrical uses. All washers come neatly organized in a portable, labeled case for easy selection and storage, making it an essential toolkit upgrade for maintenance pros and DIY enthusiasts alike.
| ASIN | B0C61TKSM6 |
| Best Sellers Rank | 5,681 in DIY & Tools ( See Top 100 in DIY & Tools ) 28 in Washers |
| Brand Name | PUTEKCO |
| Colour | Red |
| Country Of Origin | China |
| Customer Reviews | 4.7 out of 5 stars 583 Reviews |
| EU Spare Part Availability Duration | 10 Years |
| Exterior Finish | Copper |
| Exterior finish | Copper |
| Fastener Size | M5, M6, M8, M10, M12, M14, M16, M20 |
| Fastener Type | Flat Washer |
| Fastener size | M5, M6, M8, M10, M12, M14, M16, M20 |
| Finish Types | Brushed |
| Item Diameter | 5 Millimetres |
| Item Dimensions | 17 x 9.5 x 2.2 centimetres |
| Item Thickness | 1 Millimetres |
| Item thickness | 1 Millimetres |
| Manufacturer | taobai |
| Manufacturer Part Number | Tool11 |
| Material | Copper |
| Material Type | Copper |
| Metal | Copper |
| Model Number | Tool11 |
| Number Of Items | 300 |
| Number of Pieces | 300 |
| Outside Diameter | - Inches |
| Screw Head Style | Flat |
| Set Name | 300 PCS Copper Sealing Rings Assortment Set |
| Size | 5mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 20mm |
| Thread Size | M5, M6, M8, M10, M12, M14, M16, M20 |
| Unit Count | 300.0 count |
| Washer Compatibility | Metric Bolts |
| Washer Type | Flat |
| Washer type | Flat |
S**L
Washers
Good quality all sizes
S**Y
Works great for sealing and maintenance jobs
I bought this copper washer assortment set to keep in my garage for general maintenance work, and it’s already come in handy several times. The box includes a nice range of sizes — everything from small M5s to larger M20s — all neatly sorted in individual compartments. The copper quality seems solid; the washers are evenly cut and have a clean surface finish with no burrs or bends. I’ve used a few on brake line fittings and oil drain plugs, and they sealed perfectly without needing to over-tighten. The storage box isn’t the strongest plastic, but it keeps everything organized. For the price, the amount and variety you get makes this kit great value. Pros: 12 common metric sizes, all clearly labeled Good sealing performance and fit Handy to have for car, plumbing, or hydraulic work Cons: Box latch feels a bit flimsy Overall, if you do your own repairs or just like having spare washers on hand, this set is worth it.
L**A
Copper washers
Brillant good value
M**B
Good selection
Good selection
J**N
Good sizes.
Good quality cooper washers.
M**E
Good price
Great for the price - handy for the tool cupboard
S**T
Quality product
Arrived quickly quality product
V**E
Plumbing or jewellery? Great for both!
I was blown away when I received this box of 'washers'. I don't plan to use them for maintenance, but they will come in very handy for my jewellery making! I TOTALLY love them! I have no doubt that I will be buying more of this product because they are so versatile. The great thing is that there are so many of them of different sizes. Not sure about the plumbing aspect, but for jewellery making I can totally recommend them! Love this purchase!
O**K
Sehr gut, super
Sehr gut, verschiedene Kupfer Unterscheiben
P**.
Impeccable
Impeccable
J**S
Qualidade a acabamento mediocre, espessura menor que o anunciado e uma medida totalmente errada.
Todas as unidades com espessura abaixo do anunciado, 1mm e 1,5mm são na realidade 0,85mm e 1,35mm. A medida anunciada M8x13x1 é M8x12x1, tem menos 1mm do diâmetro total. O total de unidades, 300pcs, está correto mas 3 medidas vieram com quantidades erradas, M6x10x1 30pcs(28) -2, M6x12x1 30pcs(31) +1 e M14x18x1 25pcs(26) +1. Caixa de qualidade fraca, chegou tudo misturado com alguns dos separadores a saírem do sítio.
A**O
rondelle tenuta olio motore
ottime utilizzate molto per vari utilizzi
S**F
Großes Sortiment für wenig Geld
Jetzt fehlt nie wieder die neue Dichtung für Ölablassschraube. Alle gängigen Größen enthalten
Trustpilot
5 days ago
1 month ago