--- product_id: 126962275 title: "Toolwiz 150PCS 15 Sizes Copper Washers Metric Sealing Assortment M17.5-M5 | Flat Ring Sump Plug Crush Washer Oil Drain Plug Gasket Seal Assortment Set M5/6/7/8/10/10.5/11/12/12.5/14/15/16/16.5/17.5" brand: "toolwiz" price: "$35.92" currency: USD in_stock: true reviews_count: 13 url: https://www.desertcart.us/products/126962275-toolwiz-150pcs-15-sizes-copper-washers-metric-sealing-assortment-m17 store_origin: US region: United States of America --- # Superior leak-proof copper seal Heat resistant up to 350°C 150PCS versatile sizes Toolwiz 150PCS 15 Sizes Copper Washers Metric Sealing Assortment M17.5-M5 | Flat Ring Sump Plug Crush Washer Oil Drain Plug Gasket Seal Assortment Set M5/6/7/8/10/10.5/11/12/12.5/14/15/16/16.5/17.5 **Brand:** toolwiz **Price:** $35.92 **Availability:** ✅ In Stock ## Summary > 🔧 Seal it like a pro — never let a leak hold you back! ## Quick Answers - **What is this?** Toolwiz 150PCS 15 Sizes Copper Washers Metric Sealing Assortment M17.5-M5 | Flat Ring Sump Plug Crush Washer Oil Drain Plug Gasket Seal Assortment Set M5/6/7/8/10/10.5/11/12/12.5/14/15/16/16.5/17.5 by toolwiz - **How much does it cost?** $35.92 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/126962275-toolwiz-150pcs-15-sizes-copper-washers-metric-sealing-assortment-m17) ## Best For - toolwiz enthusiasts ## Why This Product - Trusted toolwiz brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact & Organized:** Transparent compartmented case keeps all 150 washers neatly sorted and ready to use - • **Complete Metric Coverage:** 15 popular sizes from M5 to M17.5 for every project - • **Leak-Proof Seal Guarantee:** Crush washers designed to prevent costly fluid leaks in automotive and plumbing systems - • **High-Temperature Endurance:** Operates flawlessly up to 350°C without warping or failure - • **Premium Copper Construction:** 100% corrosion-resistant copper ensures durability and conductivity ## Overview The Toolwiz 150PCS Copper Washer Assortment offers a comprehensive set of 15 metric sizes crafted from 100% high-conductivity copper. Engineered for superior sealing in automotive, plumbing, and hydraulic applications, these washers withstand temperatures up to 350°C and pressures up to 16MPa. Packaged in a clear, compartmentalized case, this set ensures quick access and organization, making it an essential toolkit upgrade for professionals and DIY enthusiasts aiming to prevent leaks and maintain peak system performance. ## Description Toolwiz metric sealing washer made of cooper prevents leakage around fasteners on a plumbing fixture, vehicle brake system or hydraulic application to prevent costly fluid leakages on plumbing fixtures and engines. Toolwiz copper washer assortment set is perfect for electrical connections on household and commercial appliances, automotive and marine uses in which the power source has a threaded / bolt-type connection. Our copper sealing washers cover all the most popular metric sizes to let you work with sump plugs, water, fuel, hydraulic fittings, and more! Box Contains the most 15 popular sizes: QTY - ID x OD x Thickness ( Unit: metric - mm ) 10pcs - M5 x 10 x 1 mm--------------10pcs - M6 x 10 x 1 mm-------------10pcs - M7 x 10 x 1 mm 10pcs - M8 x 11 x 1 mm--------------10pcs - M10 x 16 x 1 mm------------10pcs - M10.5 x 17 x 1.5 mm 10pcs - M11 x 17 x 1.5 mm-----------10pcs - M14 x 18 x 1 mm-----------10pcs - M12 x 20 x 1.5 mm 10pcs - M12.5 x 20 x 1.5 mm---------10pcs - M14 x 20 x 1.5 mm---------10pcs - M15 x 20 x 2 mm 10pcs - M16 x 22 x 2 mm-------------10pcs - M16.5 x 24 x 2 mm---------10pcs - M17.5 x 24 x 2 mm ## Features - Material: 100% copper, high conductivity, corrosion resistant copper washer assortment - 150PCS 15 Popular Sizes Sealing Washers Kit, great for sump plugs, water, fuel, and hydraulic fittings - 150 pcs solid copper sump plug washer set. All contained in a compact and see through compartmented plastic case, convenience to use. - Copper Provides a Tighter Seal and Greater Heat Endurance than Steel and Rubber Washers. Max Operation temperature: 350C Max Operation pressure:16MPa Melting point: 1083C - Widely applied in the flange and the connection of the chemical plant, electricity generating station, nuclear power station, and electronic, digital consumer products, hardware, precision instruments, electrical appliances, bearings, air pumps, water pumps, water valves, air cylinder, sealing the high pressure braking systems.ect. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B07G5FP73B | | Best Sellers Rank | #45,108 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #17 in Sealing Washers | | Brand | Toolwiz | | Color | Copper | | Compatible Groove Diameter | 16 millimeters | | Customer Reviews | 4.7 4.7 out of 5 stars (1,137) 4.7 out of 5 stars | | Exterior Finish | Copper | | Fastener Size | M14 | | Fastener Type | Flat Washer | | Finish Types | Natural Metallic | | Grade Rating | Copper | | Item Diameter | 17.5 millimeters | | Item Thickness | 1 millimeters | | Item Weight | 0.29 kg | | Manufacturer | kingcompany | | Material Type | Copper | | Metal Type | Copper | | Model | kupfer unterlegscheiben flach | | Number Of Items | 150 | | Number Of Pieces | 150 | | Outside Diameter | 20 millimeters | | Part Number | ASR0271RD | | Screw Head Style | Flat | | Set Name | 150PCS 15 Sizes Copper Washers Metric Sealing Assortment M17.5-M5 | | Size Name | 5mm to 17.5mm | | Unit Count | 1 Count | | Upc | 696177827450 | | Washer Compatibility | bolts, screws | | Washer Type | Flat | ## Product Details - **Exterior Finish:** Copper - **Fastener Size:** M14 - **Material:** Copper - **Outside Diameter:** 20 millimeters - **Washer Type:** Flat ## Images ![Toolwiz 150PCS 15 Sizes Copper Washers Metric Sealing Assortment M17.5-M5 | Flat Ring Sump Plug Crush Washer Oil Drain Plug Gasket Seal Assortment Set M5/6/7/8/10/10.5/11/12/12.5/14/15/16/16.5/17.5 - Image 1](https://m.media-amazon.com/images/I/71f-S0EC2jS.jpg) ![Toolwiz 150PCS 15 Sizes Copper Washers Metric Sealing Assortment M17.5-M5 | Flat Ring Sump Plug Crush Washer Oil Drain Plug Gasket Seal Assortment Set M5/6/7/8/10/10.5/11/12/12.5/14/15/16/16.5/17.5 - Image 2](https://m.media-amazon.com/images/I/71xBy-B8ZcL.jpg) ![Toolwiz 150PCS 15 Sizes Copper Washers Metric Sealing Assortment M17.5-M5 | Flat Ring Sump Plug Crush Washer Oil Drain Plug Gasket Seal Assortment Set M5/6/7/8/10/10.5/11/12/12.5/14/15/16/16.5/17.5 - Image 3](https://m.media-amazon.com/images/I/81AbzhYMuUL.jpg) ![Toolwiz 150PCS 15 Sizes Copper Washers Metric Sealing Assortment M17.5-M5 | Flat Ring Sump Plug Crush Washer Oil Drain Plug Gasket Seal Assortment Set M5/6/7/8/10/10.5/11/12/12.5/14/15/16/16.5/17.5 - Image 4](https://m.media-amazon.com/images/I/71VxwjWN2hS.jpg) ![Toolwiz 150PCS 15 Sizes Copper Washers Metric Sealing Assortment M17.5-M5 | Flat Ring Sump Plug Crush Washer Oil Drain Plug Gasket Seal Assortment Set M5/6/7/8/10/10.5/11/12/12.5/14/15/16/16.5/17.5 - Image 5](https://m.media-amazon.com/images/I/81H0usGooZL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ happy *by on Reviewed in the United States August 23, 2025* seems to be a nice set happy with it ### ⭐⭐⭐⭐⭐ Lots of sizes *by on Reviewed in the United States April 27, 2024* I only needed two, but ended up useing this kit 3 more times.I will be needing it for another vehicle soon.Worth the price, and it sure is handy having them in the shop already. ### ⭐⭐⭐⭐⭐ Works Good *by on Reviewed in the United States May 21, 2026* Sealed well. Kit included correct diameter and thickness for 1996 Polaris Sportsman 500 engine oil reservoir. Single OEM washer is about 1/2 of the cost of this kit. --- ## 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.us/products/126962275-toolwiz-150pcs-15-sizes-copper-washers-metric-sealing-assortment-m17](https://www.desertcart.us/products/126962275-toolwiz-150pcs-15-sizes-copper-washers-metric-sealing-assortment-m17) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-16*