---
product_id: 311322330
title: "Copper Washers, 150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit"
brand: "helifouner"
price: "RM205"
currency: MYR
in_stock: true
reviews_count: 5
category: "Helifouner"
url: https://www.desertcart.com.my/products/311322330-copper-washers-150pcs-8-sizes-copper-metric-sealing-washers-flat
store_origin: MY
region: Malaysia
---

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

**Brand:** helifouner
**Price:** RM205
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal the deal with copper precision – because your projects deserve the best!

## 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?** RM205 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/products/311322330-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

- • **Copper Powerhouse:** Crafted from premium copper for unmatched heat resistance and corrosion defense.
- • **Multi-Industry Ready:** Ideal for automotive, marine, electrical, and hydraulic applications—be the pro who’s always prepared.
- • **Leak-Proof Confidence:** Smooth surface design reduces friction, preventing leaks and loosening under pressure.
- • **Precision Fit for Every Job:** 8 metric sizes (M6 to M20) cover all your sealing needs with ease.
- • **Bulk Assortment, Instant Access:** 150-piece kit ensures you never run out of the right washer when it matters most.

## Overview

This 150-piece copper washer assortment features 8 metric sizes (M6 to M20) designed for superior sealing performance. Made from high-quality copper, these washers offer excellent heat resistance, corrosion protection, and electrical conductivity. Their smooth finish minimizes friction and leakage, making them perfect for automotive, marine, electrical, and hydraulic applications. A must-have kit for professionals who demand reliability and versatility.

## 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: I use the copper washers for jewellery making and wanted pure copper that I can treat with liver of sulphur to age and tarnish. I can confirm that these rings will tarnish and the effects I've achieved are as exp.
Review: Many sizes.

## 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 |
|---------------|-------|
| Brand Name | HELIFOUNER |
| Model Info | SLKRWASHER-COPPER--150P |
| Part Number | SLKRWASHER-COPPER--150P |
| Color | Copper |
| Material Type | Copper |
| Batteries Included? | No |
| Batteries Required? | No |
| Assembled Diameter | 6 Millimeters |
| Thickness | 1 Millimeters |
| Item Weight | 249 g |

## Product Details

- **Material:** Copper
- **Outside diameter:** 26 Millimeters
- **Washer type:** Flat
- **Exterior finish:** Copper
- **Fastener size:** M6 M8 M10 M12 M14 M16 M18 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)

## 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

### ⭐⭐⭐⭐⭐ Review
*by R***D on 14 June 2022*

I use the copper washers for jewellery making and wanted pure copper that I can treat with liver of sulphur to age and tarnish. I can confirm that these rings will tarnish and the effects I've achieved are as exp.

### ⭐⭐⭐⭐⭐ Review
*by M***R on 2 July 2023*

Many sizes.

### ⭐⭐⭐⭐⭐ Review
*by T***. on 27 October 2025*

Handy kit to have.

## 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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*Product available on Desertcart Malaysia*
*Store origin: MY*
*Last updated: 2026-03-09*