--- product_id: 131992613 title: "HELIFOUNER Copper Washers, 150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit" brand: "helifouner" price: "18524CFA" currency: XOF in_stock: true reviews_count: 13 category: "Helifouner" url: https://www.desertcart.sn/products/131992613-helifouner-copper-washers-150pcs-8-sizes-copper-metric-sealing-washers store_origin: SN region: Senegal --- # Superior conductivity High heat resistance 150PCS versatile kit HELIFOUNER Copper Washers, 150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit **Brand:** helifouner **Price:** 18524CFA **Availability:** ✅ In Stock ## Summary > ⚡ Seal it tight, last for life — the copper upgrade your toolkit deserves! ## Quick Answers - **What is this?** HELIFOUNER Copper Washers, 150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit by helifouner - **How much does it cost?** 18524CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/131992613-helifouner-copper-washers-150pcs-8-sizes-copper-metric-sealing-washers) ## Best For - helifouner enthusiasts ## Why This Product - Trusted helifouner brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Multi-Industry Ready:** Perfect for automotive, marine, electrical, and household applications. - • **Premium Conductivity:** Copper material guarantees superior electrical and thermal conductivity for reliable connections. - • **All-in-One Copper Kit:** 150 precision washers across 8 metric sizes to fit every project. - • **Seamless Installation:** Smooth surfaces reduce friction, preventing leaks and loosening under pressure. - • **Engineered for Endurance:** Copper’s natural corrosion and oxidation resistance ensures long-lasting performance. ## Overview The HELIFOUNER Copper Washers Assortment Kit includes 150 flat washers in 8 metric sizes (M6 to M20), crafted from high-quality copper for exceptional heat resistance, corrosion protection, and electrical conductivity. Designed for diverse applications from automotive to marine and household electrical fittings, these smooth-surfaced washers ensure leak-proof, secure connections while reducing friction and wear. ## Description Specification: Material: Copper Quantity: 150 PCS Size: M6 M8 M10 M12 M14 M16 M18 M20 Feature: 1, High quality copper material, with high conductivity, corrosion resistant 2, Good performance of have superior rust resistance and the excellent of oxidation resistance for long time use 3, Easy to install, the washer's surface are smooth can reduces friction between the screw and nut, prevents leakage, isolates, prevents loosening or dispersion pressure 4, Perfect for electrical connections on household and commercial appliances, automotive and marine uses in which the power source has a threaded/bolt-type connection Package included: M6 x 12 x 1mm-----------------------30pcs M8 x 14 x 1mm-----------------------30pcs M10 x 16 x 1mm----------------------15pcs M12 x 18 x 1mm----------------------15pcs M14 x 20 x 1.5mm--------------------15pcs M16 x 22 x 1.5mm--------------------15pcs M18 x 24 x 1.5mm---------------------15pcs M20 x 26 x 1.5mm---------------------15pcs Package Quantity: HELIFOUNER 150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit Warning: small parts, keep away from children and kids. Review: Great deal to last you a long time - Bought for my dirtbike so I would always have some available and not have to go to the dealer and get ripped off on a single one. Review: Good quality and good value - I needed just a couple, but this was a good value and since I bought the set, I have used more than just a couple....They serve more than one application and seal very well....If you're doing anything mechanical, you'll run into a need for these sooner than later and pay twice as much for fewer at the stores...Bottom line, g good buy. ## Features - 【Size】M6 M8 M10 M12 M14 M16 M18 M20, total 8 sizes, different sizes can meet your different needs - 【Material】Made of Copper, have a tighter seal and high heat resistance than steel and rubber washers - 【Feature】High conductivity, corrosion resistant copper washer assortment, great for sump plugs, water, fuel and hydraulic fittings - 【Applications】Used Widely in electrical connections on household and commercial appliances, automotive and marine uses in which the power source has a threaded/bolt-type connection - 【Package Include】It contains 150pcs/8 Sizes of the most commonly used copper washers, They are very easy to install, the washer's surface are smooth can reduces friction between the screw and nut, prevents leakage, isolates, prevents loosening or dispersion pressure ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07H299LZM | | Best Sellers Rank | #51,405 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #300 in Flat Washers | | Brand | HELIFOUNER | | Customer Reviews | 4.7 out of 5 stars 537 Reviews | | Exterior Finish | Copper | | Fastener Size | M6 | | Fastener Type | Flat Washer | | Finish Types | Copper | | Item Diameter | 6 Millimeters | | Item Thickness | 1 Millimeters | | Item Weight | 0.25 Kilograms | | Manufacturer | HELIFOUNER | | Material | Copper | | Material Type | Copper | | Metal Type | Copper | | Model | SLKRWASHER-COPPER--150P | | Number of Pieces | 150 | | Outside Diameter | 26 Millimeters | | Part Number | SLKRWASHER-COPPER--150P | | Screw Head Style | Flat | | Size Name | Assorted (8 Sizes) | | UPC | 781573059465 | | Unit Count | 1 Count | | Washer Type | Flat | ## Product Details - **Exterior Finish:** Copper - **Fastener Size:** M6 - **Material:** Copper - **Outside Diameter:** 26 Millimeters - **Washer Type:** Flat ## Images ![HELIFOUNER Copper Washers, 150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit - Image 1](https://m.media-amazon.com/images/I/811LlVOZnXL.jpg) ![HELIFOUNER Copper Washers, 150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit - Image 2](https://m.media-amazon.com/images/I/71seueEbQIL.jpg) ![HELIFOUNER Copper Washers, 150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit - Image 3](https://m.media-amazon.com/images/I/71ox+fnceRL.jpg) ![HELIFOUNER Copper Washers, 150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit - Image 4](https://m.media-amazon.com/images/I/71TzGnJoOZL.jpg) ![HELIFOUNER Copper Washers, 150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit - Image 5](https://m.media-amazon.com/images/I/61loVQ0O1jL.jpg) ## Questions & Answers **Q: Is this solid copper or copper plated?** A: I know that that they are solid and not plated because I sacrificed a few with the grinder to make sure. :-) Note that "solid/not plated" and "solid copper" are somewhat different questions. One would need to perform a chemical analysis to determine whether they are "solid copper" or "solid copper alloy of some sort." They are nicely formed and behave like copper; that is good enough for me. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great deal to last you a long time *by D***R on April 7, 2026* Bought for my dirtbike so I would always have some available and not have to go to the dealer and get ripped off on a single one. ### ⭐⭐⭐⭐⭐ Good quality and good value *by T***N on January 11, 2020* I needed just a couple, but this was a good value and since I bought the set, I have used more than just a couple....They serve more than one application and seal very well....If you're doing anything mechanical, you'll run into a need for these sooner than later and pay twice as much for fewer at the stores...Bottom line, g good buy. ### ⭐⭐⭐⭐ It is faithful to its function. *by K***E on February 16, 2026* I used it once, and there was no problem. I just wanted a slightly thicker product when I bought it, but I couldn’t find one on Amazon. I just hope there won’t be any problems in the future. ## Frequently Bought Together - HELIFOUNER Copper Washers, 150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit - HELIFOUNER 560 Pieces 18 Sizes Automotive Drain Plug Gaskets, Oil Crush Washers, Aluminum Flat Washers Assortment Kit (M6 M8 M10 M12 M14 M16 M18 M20 M22 M24) - HELIFOUNER 50 Pieces M20x26x1.5mm Copper Washers, Copper Metric Sealing Washers, Inner Diameter 20mm, Outer Diameter 26mm, Thickness 1.5mm --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sn/products/131992613-helifouner-copper-washers-150pcs-8-sizes-copper-metric-sealing-washers](https://www.desertcart.sn/products/131992613-helifouner-copper-washers-150pcs-8-sizes-copper-metric-sealing-washers) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-06-23*