---
product_id: 27750452
title: "3M Scotch-Weld Epoxy Adhesive DP420, Black, Two-Part Epoxy Structural Adhesive, High Impact, Fatigue Resistant, Maintains Bond Strength, 200 mL (6.76 fl oz) Duo-Pak"
brand: "3m"
price: "₨1841"
currency: SCR
in_stock: true
reviews_count: 8
url: https://www.desertcart.sc/products/27750452-3m-scotch-weld-epoxy-adhesive-dp420-black-two-part-epoxy
store_origin: SC
region: Seychelles
---

# 20 min open working time for repositioning High shear strength for durable bonds Withstands paint bake up to 400°F 3M Scotch-Weld Epoxy Adhesive DP420, Black, Two-Part Epoxy Structural Adhesive, High Impact, Fatigue Resistant, Maintains Bond Strength, 200 mL (6.76 fl oz) Duo-Pak

**Brand:** 3m
**Price:** ₨1841
**Availability:** ✅ In Stock

## Summary

> 🔧 Elevate your structural bonding game with 3M’s powerhouse epoxy!

## Quick Answers

- **What is this?** 3M Scotch-Weld Epoxy Adhesive DP420, Black, Two-Part Epoxy Structural Adhesive, High Impact, Fatigue Resistant, Maintains Bond Strength, 200 mL (6.76 fl oz) Duo-Pak by 3m
- **How much does it cost?** ₨1841 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/27750452-3m-scotch-weld-epoxy-adhesive-dp420-black-two-part-epoxy)

## 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

- • **Time-Smart Workflow:** 20-minute reposition window plus digital dispensing assistant for faster setup
- • **Precision Application:** Duo-Pak system with 3M Applicators ensures accurate mixing & dispensing
- • **Unrivaled Bond Strength:** Replaces mechanical fasteners with high-impact, fatigue-resistant epoxy
- • **Industrial-Grade Durability:** UL 94 HB certified and cures fully in 24 hours for long-lasting performance
- • **Versatile Substrate Compatibility:** Bonds metals, ceramics, wood, glass, composites & plastics seamlessly

## Overview

3M Scotch-Weld Epoxy Adhesive DP420 is a professional-grade, two-part structural adhesive designed for high-impact and fatigue-resistant bonding across a wide range of substrates including metals, ceramics, wood, glass, and plastics. It offers a 20-minute open time for repositioning, cures fully in 24 hours at room temperature, withstands paint bake temperatures up to 400°F, and is UL 94 HB certified. Available in a convenient Duo-Pak with precision applicators and supported by a digital dispensing assistant, it’s engineered to replace mechanical fasteners in demanding industrial and transportation applications.

## 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: 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.
Review: The best epoxy, and the only one I use for crtical applications - 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?

## 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 | B0188T8Q4G |
| Best Sellers Rank | #22,566 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #443 in Tile Epoxy Adhesives |
| Brand | 3M |
| Color | Black |
| Date First Available | November 19, 2015 |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 00021200415302, 00068060756640 |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Volume | 200 Milliliters |
| Item Weight | 10.8 ounces |
| Item model number | DP420 |
| Manufacturer | 3M |
| Material | Epoxy Resin |
| Package Dimensions | 7.4 x 3.11 x 1.61 inches |
| Package Information | Can |
| Special Feature | High Impact and Fatigue Resistant |
| Specific Uses For Product | General Industrial, Metalworking, Transportation, Woodworking, Repair, Flooring, Masonry, Countertop, Furniture |
| UPC | 021200415302 |
| Unit Count | 6.76 Fluid Ounces |
| Viscosity | 20000-50000 cps at room temperature |
| Viscosity Level | Medium to High |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** 3M
- **Item Form:** Liquid
- **Material:** Epoxy Resin
- **Special Feature:** High Impact and Fatigue Resistant

## Images

![3M Scotch-Weld Epoxy Adhesive DP420, Black, Two-Part Epoxy Structural Adhesive, High Impact, Fatigue Resistant, Maintains Bond Strength, 200 mL (6.76 fl oz) Duo-Pak - Image 1](https://m.media-amazon.com/images/I/313gslZQ0vL.jpg)
![3M Scotch-Weld Epoxy Adhesive DP420, Black, Two-Part Epoxy Structural Adhesive, High Impact, Fatigue Resistant, Maintains Bond Strength, 200 mL (6.76 fl oz) Duo-Pak - Image 2](https://m.media-amazon.com/images/I/318lk2C0tgL.jpg)
![3M Scotch-Weld Epoxy Adhesive DP420, Black, Two-Part Epoxy Structural Adhesive, High Impact, Fatigue Resistant, Maintains Bond Strength, 200 mL (6.76 fl oz) Duo-Pak - Image 3](https://m.media-amazon.com/images/I/31Jhg5b5yqL.jpg)
![3M Scotch-Weld Epoxy Adhesive DP420, Black, Two-Part Epoxy Structural Adhesive, High Impact, Fatigue Resistant, Maintains Bond Strength, 200 mL (6.76 fl oz) Duo-Pak - Image 4](https://m.media-amazon.com/images/I/31TskaQV0DL.jpg)
![3M Scotch-Weld Epoxy Adhesive DP420, Black, Two-Part Epoxy Structural Adhesive, High Impact, Fatigue Resistant, Maintains Bond Strength, 200 mL (6.76 fl oz) Duo-Pak - Image 5](https://m.media-amazon.com/images/I/31bXmNtR-5L.jpg)

## Available Options

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

## Questions & Answers

**Q: Does it come with mixing nozzle?**
A: No. Mine did not

**Q: does it hold up to gasoline**
A: unsure, haven't tested against gasoline.

**Q: Can this be sanded after curning?**
A: Yep

**Q: will this product bond plastic to cement ? I will be using it on the roof of the house to hols down solar panels joints. Thank you**
A: The only time i used this product was to glue conduit and coupling together (metal to metal) for a government secure  data conduit.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 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?

### ⭐⭐⭐⭐⭐ Good and Strong
*by J***H on January 13, 2025*

I bought this to repair a carbon fiber spoiler with an aluminum hardware insert that had been damaged in a hit-and-run. After cleaning and preparing the carbon and aluminum I flooded the gaps with this epoxy and let it set up overnight. Seems to be working perfectly, you can't even tell the spoiler was hit except for the scuffs on the side. and so it does exactly what it promises.

## Frequently Bought Together

- 3M Scotch-Weld Epoxy Adhesive DP420, Black, Two-Part Epoxy Structural Adhesive, High Impact, Fatigue Resistant, Maintains Bond Strength, 200 mL (6.76 fl oz) Duo-Pak
- 3M 8193 Mixing Nozzle, Cascade Mix/Meter Nozzle, Manual/Pneumatic Applicator Use, 1 Pack, 6/Bag
- 3M Manual Cartridge Applicator, 08571, Accurately Dispense Materials, Steady Application, 200 ml

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-02-07*