---
product_id: 413741000
title: "Copper Washers, 150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit"
brand: "helifouner"
price: "230 zł"
currency: PLN
in_stock: true
url: https://www.desertcart.pl/products/413741000-copper-washers-150pcs-8-sizes-copper-metric-sealing-washers-flat
store_origin: PL
region: Poland
---

# Superior electrical conductivity High heat & corrosion resistance 150PCS versatile sizes Copper Washers, 150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit

**Brand:** helifouner
**Price:** 230 zł
**Availability:** ✅ In Stock

## Summary

> ⚙️ Upgrade your toolkit with copper precision that lasts and performs!

## Quick Answers

- **What is this?** Copper Washers, 150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit by helifouner
- **How much does it cost?** 230 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/413741000-copper-washers-150pcs-8-sizes-copper-metric-sealing-washers-flat)

## 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 demanding reliability.
- • **All-in-One Copper Kit:** 150 precision washers across 8 metric sizes to fit every project.
- • **Seamless Seal & Safety:** Smooth surfaces reduce friction, prevent leaks, and secure tight connections every time.
- • **Effortless Installation:** Flat washers designed for quick, hassle-free fitting—no expert needed.
- • **Engineered for Endurance:** Copper’s natural corrosion and oxidation resistance ensures long-lasting performance.

## Overview

The HELIFOUNER Copper Washers Assortment Kit offers 150 high-quality flat washers in 8 metric sizes, crafted from corrosion-resistant copper. Designed for superior sealing, heat resistance, and electrical conductivity, these washers are ideal for automotive, marine, electrical, and household applications requiring durable, leak-proof connections.

## Description

Copper Washers, 150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit

## Features

- 【Size】M6 M8 M10 M12 M14 M16 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 |
|---------------|-------|
| Material | Copper |
| Outside Diameter | 26 Millimetres |
| Washer Type | Flat |
| Exterior Finish | Copper,Rubber,Steel |
| Fastener Size | M6 M8 M10 M12 M14 M16 M20 |
| Item Thickness | 1 Millimetres |
| Size | M6 M8 M10 M12 M14 M16 M18 M20 |
| Metal Type | Copper |
| Brand | HELIFOUNER |
| Item Weight | 0.25 Kilograms |
| Number of Pieces | 150 |
| Item Diameter | 6 Millimetres |
| UPC | 781573059465 |
| Manufacturer | HELIFOUNER |
| Country of Origin | USA |
| Item model number | SLKRWASHER-COPPER--150P |
| ASIN | B07H299LZM |

## Product Details

- **Material:** Copper
- **Outside Diameter:** 26 Millimetres
- **Washer Type:** Flat
- **Exterior Finish:** Copper,Rubber,Steel
- **Fastener Size:** M6 M8 M10 M12 M14 M16 M20

## Images

![Copper Washers, 150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit - Image 1](https://m.media-amazon.com/images/I/811LlVOZnXL.jpg)
![Copper Washers, 150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit - Image 2](https://m.media-amazon.com/images/I/71seueEbQIL.jpg)
![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)
![Copper Washers, 150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit - Image 4](https://m.media-amazon.com/images/I/71TzGnJoOZL.jpg)
![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.

## 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

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**Shop now:** [https://www.desertcart.pl/products/413741000-copper-washers-150pcs-8-sizes-copper-metric-sealing-washers-flat](https://www.desertcart.pl/products/413741000-copper-washers-150pcs-8-sizes-copper-metric-sealing-washers-flat)

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-01-26*