---
product_id: 14554858
title: "3M Urethane Seam Sealer, 08365, Beige 310mL Cartridge"
brand: "3m"
price: "€ 82.29"
currency: EUR
in_stock: true
reviews_count: 13
category: "3 M"
url: https://www.desertcart.hr/products/14554858-3m-urethane-seam-sealer-08365-beige-310ml-cartridge
store_origin: HR
region: Croatia
---

# Moisture curing for heat & humidity 310mL high-capacity cartridge Non-shrinking, flexible formula 3M Urethane Seam Sealer, 08365, Beige 310mL Cartridge

**Brand:** 3m
**Price:** € 82.29
**Availability:** ✅ In Stock

## Summary

> 🛡️ Seal like a pro, last like a legend!

## Quick Answers

- **What is this?** 3M Urethane Seam Sealer, 08365, Beige 310mL Cartridge by 3m
- **How much does it cost?** € 82.29 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/14554858-3m-urethane-seam-sealer-08365-beige-310ml-cartridge)

## 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

- • **Fast-Track Finish:** Paintable in just 30-45 minutes, accelerating your project timeline without sacrificing quality.
- • **Weatherproof Warrior:** Moisture curing technology ensures peak performance even in extreme heat and humidity.
- • **Heavy-Duty Filling Power:** Thick consistency fills large voids effortlessly, perfect for industrial-grade sealing needs.
- • **Precision Adhesion Mastery:** Bonds flawlessly to bare, primed, and painted metal for a seamless finish.
- • **Durability Without Compromise:** Non-shrinking and crack-resistant formula maintains flexibility for long-lasting protection.

## Overview

The 3M Urethane Seam Sealer 08365 is a professional-grade, single-component urethane paste designed for automotive and industrial metal surfaces. With a 310mL cartridge, it offers superior adhesion to bare, primed, and painted metals, cures moisture-activated for resilience in high heat and humidity, and remains permanently flexible without shrinking or cracking. Paintable within 30-45 minutes, it fills large gaps with ease, making it the go-to sealant for durable, high-performance seam sealing.

## Description

Our 3M™ urethane seam sealer is a high solids seam sealer ideal for sealing automotive and RV seams and joints. It adheres well to bare metal, primed metal and painted surfaces, and if desired can be smoothed to a featheredge and/or brushed. Tack free and paintable after 30-45 minutes, This urethane formula is permanently flexible and offers superior performance to solvent-based sealers.

Review: Top-Notch 3M Urethane Seam Sealer for Car Repairs - This 3M Urethane Seam Sealer is an absolute game-changer for anyone doing car repairs. 🚗 The black color is sleek, and the high solids formula ensures a sturdy hold. What I love most is how it's permanently flexible, so I don't have to worry about cracks or peeling over time. The 310 mL/10.5 fl oz cartridge is also super convenient to use. Highly recommend this product if you want a reliable and long-lasting solution for sealing seams on your vehicle. It's perfect for DIY enthusiasts and professionals alike. The only downside is the price, but considering the quality and performance, it's totally worth it. 🔧💪 Don't hesitate to grab one of these if you're serious about maintaining your car in top condition! 🌟
Review: A good seam sealer. - It’s seam sealer. I appreciated the fact that I was able to get it in black, I feel like using white especially on a vehicle undercarriage can be a little unsightly. Just my opinion. Even if I’m painting over it. I’m not a body man but it did exactly what I needed to do. Exceptional adhesive both were the same has held up well. desertcart was cheap and convenient to order from, helping me finish my floors in my truck.

## Features

- High quality, single component formula adheres well to bare metal, primed metal and painted surfaces
- Moisture curing property provides excellent performance in high heat and humidity Environments
- Non-shrinking, non-cracking, low/no odor formula remains flexible and offers superior results to solvent-based Sealers
- Paintable after 30-45 minutes
- Thick consistency is able to fill large voids
- For industrial/occupational use only. Not for consumer sale or use.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00A9ZR7ZW |
| Best Sellers Rank | #2,467 in Automotive ( See Top 100 in Automotive ) #4 in Automotive Sealers |
| Brand | 3M |
| Brand Name | 3M |
| Color | Beige |
| Compatible Material | Metal |
| Customer Reviews | 4.5 out of 5 stars 1,417 Reviews |
| Global Trade Identification Number | 00051135083659 |
| Included Components | Tools and Accessories |
| Item Dimensions | 9.72 x 8.19 x 6.3 inches |
| Item Form | Paste |
| Item Type Name | Paint & Masking Products |
| Item Weight | 14.07 ounces |
| Item dimensions L x W x H | 9.72 x 8.19 x 6.3 inches |
| Manufacturer | 3M |
| Material | solid |
| Material Type | solid |
| Model | 08365 |
| Number of Items | 1 |
| Part Number | 08365 |
| Style | Cartridge |
| Style Name | Cartridge |
| Surface Recommendation | Metal |
| UPC | 051135083659 |
| Unit Count | 10.5 Fluid Ounces |
| Warranty Description | 1 yr warranty from date of shipment from vendor |
| Water Resistance Level | Water Resistant |

## Product Details

- **Material:** solid
- **Brand:** 3M
- **Style:** Cartridge
- **Item Weight:** 14.07 Ounces
- **Item dimensions L x W x H:** 9.72 x 8.19 x 6.3 inches

## Images

![3M Urethane Seam Sealer, 08365, Beige 310mL Cartridge - Image 1](https://m.media-amazon.com/images/I/61M52IqAihL.jpg)
![3M Urethane Seam Sealer, 08365, Beige 310mL Cartridge - Image 2](https://m.media-amazon.com/images/I/61dJEmM7P6L.jpg)
![3M Urethane Seam Sealer, 08365, Beige 310mL Cartridge - Image 3](https://m.media-amazon.com/images/I/719WQIWWtoL.jpg)
![3M Urethane Seam Sealer, 08365, Beige 310mL Cartridge - Image 4](https://m.media-amazon.com/images/I/71UqDkotFML.jpg)
![3M Urethane Seam Sealer, 08365, Beige 310mL Cartridge - Image 5](https://m.media-amazon.com/images/I/61HKeYXkO3L.jpg)

## Available Options

This product comes in different **Color, Size, Style** options.

## Questions & Answers

**Q: Does it come with the plastic nozzle?**
A: No! I ordered 3 tubes and no nozzle. I wish I’d have known that before ordering.

**Q: Can you sand it?**
A: Thank you for your question. We like to know more details regarding your application. When sanding is involved this imposes possibility of exposed metal causing corrosion/rust.  Please contact us at 877-666-2277 option 2 to discuss your application.

**Q: What chemical can be used on it to “smooth” after applying?**
A: Thank you for your question! You can tool the 3M 08367 Urethane Seam Sealer with water or mild solvent such as a pre-cleaner. Do not tool with any alcohol containing solvents, they will stop the curing process of the seam sealer.

**Q: Is the tube made of plastic or thin steel ?**
A: Thank you for your question! The 3M 08367 Urethane Seam Sealer is packaged in a thin metal cartridge.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Top-Notch 3M Urethane Seam Sealer for Car Repairs
*by A***S on June 26, 2025*

This 3M Urethane Seam Sealer is an absolute game-changer for anyone doing car repairs. 🚗 The black color is sleek, and the high solids formula ensures a sturdy hold. What I love most is how it's permanently flexible, so I don't have to worry about cracks or peeling over time. The 310 mL/10.5 fl oz cartridge is also super convenient to use. Highly recommend this product if you want a reliable and long-lasting solution for sealing seams on your vehicle. It's perfect for DIY enthusiasts and professionals alike. The only downside is the price, but considering the quality and performance, it's totally worth it. 🔧💪 Don't hesitate to grab one of these if you're serious about maintaining your car in top condition! 🌟

### ⭐⭐⭐⭐⭐ A good seam sealer.
*by S***S on June 13, 2026*

It’s seam sealer. I appreciated the fact that I was able to get it in black, I feel like using white especially on a vehicle undercarriage can be a little unsightly. Just my opinion. Even if I’m painting over it. I’m not a body man but it did exactly what I needed to do. Exceptional adhesive both were the same has held up well. Amazon was cheap and convenient to order from, helping me finish my floors in my truck.

### ⭐⭐⭐⭐⭐ Great product, came recommended and worked perfectly for Ford Explorer leaky rear hatch hinge seals
*by C***F on November 7, 2025*

Worked great for my leaky rear hatch hinge seals that had broken down over time on my 2013 Ford Explorer. I had water coming in and was pooling down into my spare tire area. YAY YouTube as I found an auto body repairman who did this exact fix and recommended this product. Followed instructions to remove decayed original sealant, cleaned the area, sanded to scuff for proper adhesion to bare metal underneath, then cleaned again to remove any debris and applied sealant. We'll see how she holds up. Repairman on YT says his he does lasts years, as he does this often on these vehicles... I sure am hoping so!!! Luckily it's in an inconspicuous spot so it didn't have to be pretty, but the color matching was def a plus. Saves me so much money by doing it myself, esp as a single girl holding up my household alone in this economy! Happy Dance!!! Product worked perfectly during loading of caulk gun and application. Mine came with the nozzle as some mentioned theirs did not. Tube did have a couple minor dings at the push/butt end but did not deter usage, so no deduction of stars for this. Higly recommend so far. Will update review after a good rain to advise how it does - if I remember to... LOL!!

## Frequently Bought Together

- 3M 08365 Beige Paint & Masking Products
- 3M Heavy-Bodied Seam Sealer, 08308, Two-Part, Self-Mixing, Automotive Epoxy, 200 ml/6.75 fl oz Cartridge , Black

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.hr/products/14554858-3m-urethane-seam-sealer-08365-beige-310ml-cartridge](https://www.desertcart.hr/products/14554858-3m-urethane-seam-sealer-08365-beige-310ml-cartridge)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-08-15*