---
product_id: 74926386
title: "Scotch-Weld Epoxy Adhesive DP420, Black, Two-Part Epoxy Structural Adhesive, High Impact and Fatigue Resistant, Maintains Bond Strength, 50 mL (1.69 fl oz) Duo-Pak"
brand: "3m"
price: "£47.33"
currency: GBP
in_stock: true
reviews_count: 8
category: "3 M"
url: https://www.desertcart.co.uk/products/74926386-scotch-weld-epoxy-adhesive-dp420-black-two-part-epoxy-structural
store_origin: GB
region: United Kingdom
---

# 20 min reposition window High shear strength bond Withstands 400°F paint bake Scotch-Weld Epoxy Adhesive DP420, Black, Two-Part Epoxy Structural Adhesive, High Impact and Fatigue Resistant, Maintains Bond Strength, 50 mL (1.69 fl oz) Duo-Pak

**Brand:** 3m
**Price:** £47.33
**Availability:** ✅ In Stock

## Summary

> 🔧 Bond like a boss — industrial strength, precision control, zero compromises.

## Quick Answers

- **What is this?** Scotch-Weld Epoxy Adhesive DP420, Black, Two-Part Epoxy Structural Adhesive, High Impact and Fatigue Resistant, Maintains Bond Strength, 50 mL (1.69 fl oz) Duo-Pak by 3m
- **How much does it cost?** £47.33 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/74926386-scotch-weld-epoxy-adhesive-dp420-black-two-part-epoxy-structural)

## Best For

- 3m enthusiasts

## Why This Product

- Trusted 3m brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Working Time:** 20 minutes to adjust and perfect your bond before it sets—no stress, just success.
- • **Unrivaled Bond Strength:** Replaces screws & rivets with a shear strength that lasts through daily abuse.
- • **Heat-Resistant Durability:** Survives paint bake cycles up to 400°F, ideal for industrial-grade applications.
- • **Smart Dispensing Efficiency:** Leverage 3M’s Digital Dispensing Assistant for faster setup and flawless application.
- • **Versatile Multi-Substrate Adhesion:** Bonds metals, ceramics, wood, glass, composites & plastics seamlessly.

## Overview

3M Scotch-Weld Epoxy Adhesive DP420 is a professional-grade, two-part structural epoxy designed for high-impact, fatigue-resistant bonding across metals, ceramics, wood, glass, composites, and plastics. It offers a 20-minute open time for repositioning, cures fully in 24 hours at room temperature, and withstands paint bake temperatures up to 400°F. Available in black or off-white, in bulk or Duo-Pak formats, it supports industrial applications with UL 94 HB certification and integrates with 3M’s Digital Dispensing Assistant for optimized automated use.

## Description

3M Scotch-Weld Epoxy Adhesive 420 is a strong, two-part epoxy structural adhesive that provides high impact and fatigue resistance to meet challenging bonding operations and can replace mechanical fasteners, screws, rivets, and spot welds in many applications. It works well on a variety of substrates, such as metals, ceramics, wood, glass, various composites, and many types of plastics while withstanding paint bake tasks in temperatures up to 400 °F (204 °C) for 60 minutes. The product is a versatile solution for joining, gluing, potting, panel, and structural bonding in a variety of industries, including sporting goods, metalworking, general industrial, and transportation industries. 3M Scotch-Weld Epoxy Adhesive 420 allows up to 20 minutes to reposition the project and is fully cured in 24 hours (at 73 °F/23 °C). It meets the standard for UL 94 HB and is available in both bulk or a Duo-Pak (DP); when using this adhesive in Duo-Pak form, rely on 3M Applicators for convenient and accurate metering, mixing, and dispensing. Try the new 3M Scotch-Weld Digital Dispensing Assistant and experience shorter machine setup time with a free new automation tool for time-pressure systems.

Review: Very high-quality epoxy. - Folks, just ensure you are using the right epoxy for the job. In my case, I needed to fill in a non-load bearing structural gap in a piece of carbon fiber that was created when it was penetrated by a screw. For this purpose, this epoxy has been excellent, it has created an sufficient bond, and I speculate it is actually stronger than the surrounding structure. I highly recommend this product for your epoxy needs assuming the application is appropriate.
Review: Aluminum to carbon fiber bonding - I used this to bond an aluminum insert into a carbon fiber tube that required very high strength. Worked excellent and is still holding after 4 months of daily abuse. Highly recommended if bonding metal to composite. Easy to use after purchasing the dispenser gun and nozzles.

## Features

- BONDS A VARIETY OF SUBSTRATES: For metals, ceramics, wood, glass, many composites and plastics
- MULTIPLE APPLICATIONS: Can be used in joining, gluing, potting, panel and structural bonding in sporting goods, metalworking, general industrial, and transportation industries
- LONG-LASTING BONDS: Has high shear strength to promote durability
- FOR TOUGH APPLICATIONS: Offers high impact and fatigue resistance
- OPPORTUNITY TO ADJUST AND REPOSITION: Allows up to 20 minutes of open working time
- FULL CURE STRENGTH: Reaches a full cure in 24 hours at a temperature of 73 °F (23 °C)
- CERTIFICATIONS: Is UL 94 HB Certified
- PRODUCT OPTIONS: Available in bulk form or a Duo-Pak (DP) and black or off-white
- DIGITAL DISPENSING ASSISTANT: Help reduce setup time using a free automation tool for time-pressure automated systems
- For industrial/occupational use only. Not for consumer sale or use

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07FQQGP96 |
| Best Sellers Rank | #14,573 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #28 in Metal Filled Epoxies |
| Brand | 3M |
| Brand Name | 3M |
| Color | Black |
| Compatible Material | Glass, Plastic |
| Container Type | Can |
| Customer Reviews | 4.6 out of 5 stars 239 Reviews |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 00068060756534, 00638060089668 |
| Included Components | Epoxy Adhesive |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Manufacturer | 3M |
| Material | Epoxy Resin |
| Material Type | Epoxy Resin |
| Model | 62277814364 |
| Number of Pieces | 2 |
| Other Special Features of the Product | High durability, available in black and off-white colors, customizable bulk or Duo-Pak options |
| Part Number | 08966 |
| Special Feature | High durability, available in black and off-white colors, customizable bulk or Duo-Pak options |
| Specific Uses For Product | General Industrial, Metalworking |
| UPC | 638060089668 |
| Unit Count | 1.69 Fluid Ounces |
| Viscosity Level | Medium to High |
| Volume | 50 Milliliters |
| Water Resistance Level | Not Water Resistant |

## Product Details

- **Brand:** 3M
- **Item Form:** Liquid
- **Material:** Epoxy Resin
- **Special Feature:** High durability, available in black and off-white colors, customizable bulk or Duo-Pak options
- **Specific Uses For Product:** General Industrial, Metalworking

## Images

![Scotch-Weld Epoxy Adhesive DP420, Black, Two-Part Epoxy Structural Adhesive, High Impact and Fatigue Resistant, Maintains Bond Strength, 50 mL (1.69 fl oz) Duo-Pak - Image 1](https://m.media-amazon.com/images/I/61F2+Kxd1+L.jpg)
![Scotch-Weld Epoxy Adhesive DP420, Black, Two-Part Epoxy Structural Adhesive, High Impact and Fatigue Resistant, Maintains Bond Strength, 50 mL (1.69 fl oz) Duo-Pak - Image 2](https://m.media-amazon.com/images/I/71ESCNpb7lL.jpg)
![Scotch-Weld Epoxy Adhesive DP420, Black, Two-Part Epoxy Structural Adhesive, High Impact and Fatigue Resistant, Maintains Bond Strength, 50 mL (1.69 fl oz) Duo-Pak - Image 3](https://m.media-amazon.com/images/I/71SoTfelnqL.jpg)
![Scotch-Weld Epoxy Adhesive DP420, Black, Two-Part Epoxy Structural Adhesive, High Impact and Fatigue Resistant, Maintains Bond Strength, 50 mL (1.69 fl oz) Duo-Pak - Image 4](https://m.media-amazon.com/images/I/7137l4nOBIL.jpg)
![Scotch-Weld Epoxy Adhesive DP420, Black, Two-Part Epoxy Structural Adhesive, High Impact and Fatigue Resistant, Maintains Bond Strength, 50 mL (1.69 fl oz) Duo-Pak - Image 5](https://m.media-amazon.com/images/I/81UrY55aFNL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very high-quality epoxy.
*by T***. on April 1, 2026*

Folks, just ensure you are using the right epoxy for the job. In my case, I needed to fill in a non-load bearing structural gap in a piece of carbon fiber that was created when it was penetrated by a screw. For this purpose, this epoxy has been excellent, it has created an sufficient bond, and I speculate it is actually stronger than the surrounding structure. I highly recommend this product for your epoxy needs assuming the application is appropriate.

### ⭐⭐⭐⭐⭐ Aluminum to carbon fiber bonding
*by T***S on November 4, 2025*

I used this to bond an aluminum insert into a carbon fiber tube that required very high strength. Worked excellent and is still holding after 4 months of daily abuse. Highly recommended if bonding metal to composite. Easy to use after purchasing the dispenser gun and nozzles.

### ⭐⭐⭐⭐⭐ The best epoxy, and the only one I use for crtical applications
*by A***R on October 21, 2023*

3m consistently makes really good products. This epoxy is the best I've ever used. I've used it for about 16 years in my business. Having black is helpful, but the quality is great. TIP: Read the product application data. Good surface prep is important. Warm the repair it to 120F and hold it there. This speeds the cure rate, and drops the time need to cure to full strength from 24 hrs down to about an hour, and it's stronger too. When buying, check the manufacturing date and shelf life. There are vendors out there who shamelessly sell out of date product. (not with this order!) Out of date product may not work as well. Adding: 5/24 I received another tube today. The seller put their in stock label over the bottom of the product label, covering the date code etc. which is printed on the 3M label when the epoxy is made. Their label adhesive lifted the obliterated the date code when I tried to remove it. What's dumb is that they put the epoxy in a poly Ziplock bag before mailing it. Why didn't they put their stock label on the bag?

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-14*