---
product_id: 250169221
title: "U-428 Dow Auto Glass Primerless Urethane//Adhesive with Single Application Primer (2)"
brand: "betaseal"
price: "€ 58.78"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.de/products/250169221-u-428-dow-auto-glass-primerless-urethane-adhesive-with-single
store_origin: DE
region: Germany
---

# Crash tested, 4-hour drive away time 26:1 thrust ratio caulk gun required Primerless adhesion to glass & metal U-428 Dow Auto Glass Primerless Urethane//Adhesive with Single Application Primer (2)

**Brand:** betaseal
**Price:** € 58.78
**Availability:** ✅ In Stock

## Summary

> 🚀 Drive away faster with crash-tested, primerless precision!

## Quick Answers

- **What is this?** U-428 Dow Auto Glass Primerless Urethane//Adhesive with Single Application Primer (2) by betaseal
- **How much does it cost?** € 58.78 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/250169221-u-428-dow-auto-glass-primerless-urethane-adhesive-with-single)

## Best For

- betaseal enthusiasts

## Why This Product

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

## Key Features

- • **Speed Meets Safety:** Certified crash-tested with a rapid 4-hour drive-away time even in cold temps
- • **Leakproof & Noise-Free:** Engineered to prevent leaks and air noise for a seamless finish
- • **Versatile Surface Bonding:** Primerless urethane sticks directly to glass, with primer for metal or paint
- • **Precision Dispensing Power:** Requires high-thrust caulk gun for flawless application
- • **Professional Grade Assurance:** OEM quality trusted by certified automotive glass technicians

## Overview

The Betaseal U-428 Dow Auto Glass Primerless Urethane is a professional-grade adhesive designed for automotive glass installation. It requires a 26:1 thrust ratio caulk gun for optimal dispensing and offers primerless adhesion to glass, with an included primer for metal or painted surfaces. Crash tested to meet FMVSS 212 standards, it enables a minimum 4-hour drive-away time at temperatures as low as 40°F, ensuring fast, reliable, and leakproof installations trusted by certified technicians.

## Description

U428 Quick Cure Automotive Urethane Adhesive Betaseal 10 oz. Tubes BLACK 10 ml Single Application Primer Stick Great adhesive product for most materials, waterproof, superior bonding Professional use product. *Seller highly recommends buyer use a qualified glass installer for use of this product. A Dupont Chemical OEM product For use on all auto glass installations Primerless urethane - no primers to glass required meets all federal retention and roof crush tests. Shelf life 6 months unopened 2-5 days opened New 100's in stock 26:1 or better Thrust Ratio Professional Caulk Gun required with Large Nozzle If you ever have any questions in regards to installations or procedures feel free to Contact us as we have been doing auto glass since 1975 2 tubes of urethane required for most windshield or back glass installations. 1 tube for most other glass installations *1-2 Tubes come with 1 single application primer 3-4 Tubes come with 2 single application primer 6 Tubes come with 3 single application primer 8 Tubes comes with 4 single application primer 10 Tubes / 1 Case come with 5 single application primer*

## Features

- (2) Tube of Dow / Dupont U428HV (10.5oz 310ml) + (1) 5504GSA Single Use Application Primer Stick 10ml
- Requires 26:1 thrust ratio caulk gun or better to properly dispense - use with wide nozzles - does not fit standard silicone caulk guns.
- Primerless to Glass Urethane - Primer to cover any scratches or for application on bare metal or freshly painted surfaces.
- OEM Quality - BETASEAL U-428HV is crash tested to a minimum drive away time of 4 hours down to 40°F/4.4°C (FMVSS 212). Please consult fixed glass installation guide for more details.
- *Professional Use Product* prior use of this product is required - failure to adhere to guidelines may result in improper installation which may include: leaks, air noises, or even serious injury. Seller highly recommends using a certified automotive glass technician.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Betaseal |
| Brand | Betaseal |
| Item Weight | 10 ounces |
| Package Dimensions | 9.69 x 4.41 x 3.43 inches |
| Manufacturer Part Number | U-428 |
| Special Features | Waterproof |

## Images

![U-428 Dow Auto Glass Primerless Urethane//Adhesive with Single Application Primer (2) - Image 1](https://m.media-amazon.com/images/I/51TOE-Xz1cL.jpg)

## Available Options

This product comes in different **Item Package Quantity** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great
*by J***N on February 4, 2024*

I had to replace my quarter panel window. I needed a good strong bond to glue my window on and prevent leaks. I honestly have never installed a window in my life, but I didn’t have the money to get it done. After watching videos and reading reviews I decided to give it a try. I cut out most of the old urethane from the vehicle with a blade. I cleaned and primed both mating surfaces with the supplied primer. A V shaped notch was cut into the nozzle of the urethane tip. I applied the product onto the car with a heavy duty caulk gun because, the regular gun I tried to use, wasn’t strong enough. The window was put in place firmly and held in with lots of blue painters tape. I used lots of tape because I didn’t want the window to move out of position. I took the tape off a day later. It’s been one year so far and I’m completely happy with this product. I have no leaks and no problem with my window. I would buy this again.

### ⭐⭐⭐⭐⭐ Best price, phenomenal product with great tech support
*by T***7 on May 17, 2023*

Used on a rear sliding window in a custom vehicle. Slider has a powder coated frame that I sanded down with 80 grit to bare metal and installed in a fiberglass surround. Was able to email and speak to a specialist that calls on body shops and has tons of experience to share on with how this product works with aluminum. Only paid $30 for 2 tubes and the primer which is far less expensive than other brands. Used one tube on the surround and that was too much. Very viscous product (first window install) so although I got the notching of the tube correct I put in too much material that made it difficult to clamp and then required excess trimming. End result is that the slider is in solid, doesn't leak and drains properly. Very pleased and tested a bunch of other materials (raw steel, polycarbonate, aluminum all to fiberglass) and they all adhere very well if primed with Dupont primer. So far this product looks like it will bond almost anything if prepped right. Plan to use this as my panel bonding product for building the rest of the vehicle.

### ⭐⭐⭐⭐⭐ Works well
*by S***Y on December 8, 2024*

Works really well. Warm up the tube if you are using an 18:1 gun. Electric gun works so much better.

## Frequently Bought Together

- Betaseal U-428 Dow Auto Glass Primerless Urethane//Adhesive with Single Application Primer (2)
- JES M26S 10 oz. 26:1 High Thrust Caulk and Adhesive Gun
- Dow Automotive 5504GML10 Beta Prime Glass Primer, 10 mL

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-01-29*