---
product_id: 69479870
title: "150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit"
brand: "sutemribor"
price: "S$50"
currency: SGD
in_stock: true
reviews_count: 9
category: "Sutemribor"
url: https://www.desertcart.sg/products/69479870-150pcs-8-sizes-copper-metric-sealing-washers-flat-washers-assortment
store_origin: SG
region: Singapore
---

# Excellent electrical conductivity High heat resistance 150pcs versatile sizes 150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit

**Brand:** sutemribor
**Price:** S$50
**Availability:** ✅ In Stock

## Summary

> ⚡ Seal the deal with copper precision – never compromise on quality!

## Quick Answers

- **What is this?** 150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit by sutemribor
- **How much does it cost?** S$50 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/69479870-150pcs-8-sizes-copper-metric-sealing-washers-flat-washers-assortment)

## Best For

- sutemribor enthusiasts

## Why This Product

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

## Key Features

- • **Complete Copper Kit:** 150 precision washers across 8 essential metric sizes for every project.
- • **Organized & Ready-to-Use:** Compact case keeps your washers sorted and accessible, eliminating downtime.
- • **Optimized for Professional Use:** Perfect fit for automotive, household, and commercial appliance repairs.
- • **Superior Heat & Corrosion Resistance:** Copper material ensures durability and reliability in harsh environments.
- • **Electrically Conductive & Nonmagnetic:** Ideal for sensitive electrical and marine applications.

## Overview

This 150-piece assortment of flat copper sealing washers covers 8 popular metric sizes (M6 to M20), crafted from high-quality copper for superior heat resistance, corrosion protection, and electrical conductivity. Designed for professional-grade sealing in automotive, marine, electrical, and household applications, this kit offers organized convenience and reliable performance to keep your projects running flawlessly.

## Description

【Specifications】 - Quality: 150 Pcs - Sizes: M6 M8 M10 M12 M14 M16 M18 M20 - Material: High-quality Copper, High Conductivity, Corrosion Resistant 【Features】 - All products are made of Copper. Copper washers are corrosion resistant in wet environments, nonmagnetic, and electrically conductive. - 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: 150pcs】 Total: 150 pcs, 8 Sizes Copper Metric Sealing Washers Flat Washers NOTE: Please check the size carefully before purchasing, thanks for your support. Warning: the product are small parts, keep away from children and kids.

Review: Good quality, value. Haven’t had any issues since I purchased them. - I purchased this set to use with my single engine aircraft. The washers are good quality and fit perfectly for my application. They may be slightly thin for some applications, so make sure that measurements will work for you. Since I replaced them every time I loosen the plugs, durability is not an issue for me.
Review: Plenty of larger washers - These crush washers seem to be good quality and have useful sizes. Most of the sets I saw had a ton of tiny washers I'd never use. This has a significant number of the larger ones. Using them for fuel and brake fittings along with drain plugs.

## Features

- √ SIZES - M6 M8 M10 M12 M14 M16 M18 M20
- √ PACKAGE - 150pcs ,8 Sizes of the most commonly used flat copper washers in a case
- √ COPPER Material - Flat Washers made of copper, have a tighter seal and high heat resistance than steel and rubber washers.
- √ FEATURE - All products are made of Copper. Copper washers are corrosion resistant in wet environments, nonmagnetic, and electrically conductive.
- √ WIDE APPLICATION - Perfect for Electrical Connections on Household and Commercial Appliances, Automotive and Marine Uses in Which the Power Source Has a Threaded / Bolt-type Connection

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07DHHLP34 |
| Best Sellers Rank | #99,059 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #533 in Flat Washers |
| Brand | Sutemribor |
| Color | Copper |
| Date First Available | June 3, 2018 |
| Exterior Finish | Copper |
| Fastener Size | M6 M8 M10 M12 M14 M16 M20 |
| Is Discontinued By Manufacturer | No |
| Item Diameter | 12 Millimeters |
| Item Thickness | 1.5 Millimeters |
| Item Weight | 8.8 ounces |
| Item model number | STBR-ZITONGDIANQUAN -150P |
| Manufacturer | Sutemribor |
| Material | Copper |
| Metal Type | Copper |
| Number of Pieces | 150 |
| Outside Diameter | 12 Millimeters |
| Size | M6 M8 M10 M12 M14 M16 M20 |
| UPC | 657390658061 |
| Washer Type | Flat |

## Product Details

- **Exterior Finish:** Copper
- **Fastener Size:** M6 M8 M10 M12 M14 M16 M20
- **Material:** Copper
- **Outside Diameter:** 12 Millimeters
- **Washer Type:** Flat

## Images

![150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit - Image 1](https://m.media-amazon.com/images/I/81hGdDYX9VL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good quality, value. Haven’t had any issues since I purchased them.
*by E***E on December 17, 2025*

I purchased this set to use with my single engine aircraft. The washers are good quality and fit perfectly for my application. They may be slightly thin for some applications, so make sure that measurements will work for you. Since I replaced them every time I loosen the plugs, durability is not an issue for me.

### ⭐⭐⭐⭐⭐ Plenty of larger washers
*by M***K on August 8, 2025*

These crush washers seem to be good quality and have useful sizes. Most of the sets I saw had a ton of tiny washers I'd never use. This has a significant number of the larger ones. Using them for fuel and brake fittings along with drain plugs.

### ⭐⭐⭐⭐⭐ a realistic review from someone with realistic expectations
*by K***S on November 14, 2019*

For the value, this is a great kit! People are complaining about deformities/rough surfaces in the washers when in reality they are just overreacting. The copper is soft and will make a seal after deformation, that is what it's designed to do! Furthermore, there are people that will down vote this washer set on the surface quality when they are most likely using them for oil changes (my true reason for purchase) and they will function as intended, understand what you are purchasing here...150 assorted copper washers for 10$! These aren't OEM and the price isn't paying for a QC inspector to verify every piece. The pictures that someone had with a flat edge, that's unfortunate but that's also the name of the game when considering what you're paying for. If you compare the cost savings to buying crush washers bought at a Big Box store, this is saving you a lot of money! You will pay $1-$2.50 per washer at a box store, that means if you get 10 good washers from this set, its paid for itself! Product packaging: As people said, this is a tiny box. The dividers can slide in slide out, I've already had some of the smaller sizes mix a few times. I think I will glue the dividers in place to prevent this in the future since I like the box to keep everything organized and the size is perfect for a toolbox. In conclusion, the pieces will meet the needs for my, and the general populations, intended use. If doing hydraulic lines I would take more time to inspect every washer I plan to use prior to installing OR pay the extra money for 100% QC products at an auto store.

## Frequently Bought Together

- Sutemribor 150PCS 8 Sizes Copper Metric Sealing Washers Flat Washers Assortment Kit
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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-15*