---
product_id: 468474244
title: "MuHize Copper Washers Kit 300PCS 12 Sizes - Metric M5 to M20 Sealing Washers with Rustproof & High-Temperature Resistance for Automotive Oil Pan, Hydraulic Fittings (Include All Flats)"
brand: "muhize"
price: "Bs.1225"
currency: BOB
in_stock: true
url: https://www.desertcart.bo/products/468474244-muhize-copper-washers-kit-300pcs-12-sizes-metric-m5-to
store_origin: BO
region: Bolivia
---

# High-temperature resistance 300PCS assorted sizes Rustproof copper material MuHize Copper Washers Kit 300PCS 12 Sizes - Metric M5 to M20 Sealing Washers with Rustproof & High-Temperature Resistance for Automotive Oil Pan, Hydraulic Fittings (Include All Flats)

**Brand:** muhize
**Price:** Bs.1225
**Availability:** ✅ In Stock

## Summary

> 🧰 Seal the deal with copper precision – don’t let leaks hold you back!

## Quick Answers

- **What is this?** MuHize Copper Washers Kit 300PCS 12 Sizes - Metric M5 to M20 Sealing Washers with Rustproof & High-Temperature Resistance for Automotive Oil Pan, Hydraulic Fittings (Include All Flats) by muhize
- **How much does it cost?** Bs.1225 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.bo](https://www.desertcart.bo/products/468474244-muhize-copper-washers-kit-300pcs-12-sizes-metric-m5-to)

## Best For

- muhize enthusiasts

## Why This Product

- Trusted muhize brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Organized Kit:** All flats included in a neatly packaged set for quick access and efficiency
- • **Complete 12-Size Assortment:** 300 precision copper washers from M5 to M20 for every project need
- • **Versatile Industrial & Home Use:** Perfect for automotive oil pans, marine fittings, and electrical connections
- • **Superior Seal & Pressure Control:** Tight sealing reduces leaks and friction in automotive and hydraulic systems
- • **Unmatched Heat & Corrosion Defense:** Copper’s natural resistance ensures durability under extreme conditions

## Overview

The MuHize Copper Washers Kit offers 300 high-quality copper flat washers in 12 metric sizes (M5 to M20), engineered for superior sealing, rust resistance, and high-temperature durability. Ideal for automotive, hydraulic, and marine applications, this kit ensures reliable pressure control and leak prevention in critical fittings.

## Description

MuHize Copper Washers Kit 300PCS 12 Sizes - Metric M5 to M20 Sealing Washers with Rustproof & High-Temperature Resistance for Automotive Oil Pan, Hydraulic Fittings (Include All Flats)

## Features

- ★ New Sales! Only 3 Days! ★ PACKAGE INCLUDE - ① MuHize copper metric sealing washer assortment kit contains 300pcs/12 Sizes of the most commonly used stainless steel washers. ② Size: M5 M6 M8 M10 M12 M14 M16 M20
- COPPER MATERIAL - The quality copper washers are made of copper. Comapred with the steel and rubber washers, the copper washers have a tighter seal and higher heat resistance.
- HIGH CONDUCTIVITY - The corrosion-resistant copper washers are perfect for sump plugs, water, fuel and hydraulic fittings. It can help reduce pressure and friction, and prevent leakage, loosening, isolate or disperse pressure.
- WIDELY APPLICATION - MuHize assorted copper washer kit is specific for the commercial appliances and electrical connections on household in which the power source has a threaded/bolt-type connection, such as automotive and marine,etc

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Copper |
| Washer Type | Flat |
| Exterior Finish | Copper,Rubber,Stainless Steel,Steel |
| Fastener Size | M6 |
| Metal Type | Stainless Steel, Alloy Steel, Copper |
| Brand | MuHize |
| Colour | Bronze |
| Number of Pieces | 300 |
| Head Style | Flat |
| Fastener Type | Flat Washer |
| Compatible groove diameter | 19 Millimeters |
| Manufacturer | Muhize |
| Model number | MUWASHER-COP300 |
| Number of Memory Sticks | 300 |
| Item Weight | 308 g |
| Package Dimensions | 17.2 x 9.91 x 2.21 cm; 308 g |
| Item model number | MUWASHER-COP300 |
| Are batteries included? | No |

## Product Details

- **Material:** Copper
- **Washer Type:** Flat
- **Exterior Finish:** Copper,Rubber,Stainless Steel,Steel
- **Fastener Size:** M6
- **Metal Type:** Stainless Steel, Alloy Steel, Copper

## Images

![MuHize Copper Washers Kit 300PCS 12 Sizes - Metric M5 to M20 Sealing Washers with Rustproof & High-Temperature Resistance for Automotive Oil Pan, Hydraulic Fittings (Include All Flats) - Image 1](https://m.media-amazon.com/images/I/71icA1Es4pL.jpg)
![MuHize Copper Washers Kit 300PCS 12 Sizes - Metric M5 to M20 Sealing Washers with Rustproof & High-Temperature Resistance for Automotive Oil Pan, Hydraulic Fittings (Include All Flats) - Image 2](https://m.media-amazon.com/images/I/7197cKsONuL.jpg)
![MuHize Copper Washers Kit 300PCS 12 Sizes - Metric M5 to M20 Sealing Washers with Rustproof & High-Temperature Resistance for Automotive Oil Pan, Hydraulic Fittings (Include All Flats) - Image 3](https://m.media-amazon.com/images/I/71pMvN7Qt0L.jpg)
![MuHize Copper Washers Kit 300PCS 12 Sizes - Metric M5 to M20 Sealing Washers with Rustproof & High-Temperature Resistance for Automotive Oil Pan, Hydraulic Fittings (Include All Flats) - Image 4](https://m.media-amazon.com/images/I/61GPtY6wyhL.jpg)
![MuHize Copper Washers Kit 300PCS 12 Sizes - Metric M5 to M20 Sealing Washers with Rustproof & High-Temperature Resistance for Automotive Oil Pan, Hydraulic Fittings (Include All Flats) - Image 5](https://m.media-amazon.com/images/I/81ZQgwlCrQL.jpg)

## Frequently Bought Together

- MuHize 300PCS 12 Sizes Copper Washers, Sealing Washers (2025 New), Metric M5 M6 M8 M10 M12 M14 M16 M20, Include Sealing Washer
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*Product available on Desertcart Bolivia*
*Store origin: BO*
*Last updated: 2026-02-06*