---
product_id: 345325323
title: "3M 08308 Heavy-Bodied Seam Sealer, 200mL Cartridge, Black"
brand: "3m"
price: "¥12850"
currency: JPY
in_stock: true
reviews_count: 5
category: "3 M"
url: https://www.desertcart.jp/products/345325323-3m-08308-heavy-bodied-seam-sealer-200ml-cartridge-black
store_origin: JP
region: Japan
---

# Dual syringe self-mixing cartridge Quick 1-hour cure time Two-part epoxy for OEM-grade sealing 3M 08308 Heavy-Bodied Seam Sealer, 200mL Cartridge, Black

**Brand:** 3m
**Price:** ¥12850
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal like a pro, cure like a boss.

## Quick Answers

- **What is this?** 3M 08308 Heavy-Bodied Seam Sealer, 200mL Cartridge, Black by 3m
- **How much does it cost?** ¥12850 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/345325323-3m-08308-heavy-bodied-seam-sealer-200ml-cartridge-black)

## 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

- • **Mess-Free Mixing:** Dual syringe cartridge guarantees perfect epoxy ratios every time—no guesswork, no cleanup.
- • **Rapid Durability:** Cures in just 1 hour for fast turnaround on professional automotive projects.
- • **OEM-Quality Finish:** Matches original equipment manufacturer seam sealers for seamless, paintable results.
- • **Precision Seam Sealing:** Heavy-bodied, non-flowing formula ensures flawless vertical and horizontal seam finishes.
- • **Versatile Industrial Use:** Ideal for door skins, floor pans, trunk floors, and roof seams—trusted by pros.

## Overview

3M 08308 Heavy-Bodied Seam Sealer is a professional-grade, two-part epoxy designed for automotive and industrial seam sealing. Featuring a dual syringe self-mixing cartridge, it delivers precise, mess-free application with a heavy-bodied, non-flowing formula that cures in just 1 hour. Perfect for vertical and horizontal seams, it matches OEM standards and is paintable, making it the go-to choice for lasting, high-performance seam protection.

## Description

3M Heavy-Bodied Seam Sealer 08308 is a two-part epoxy seam sealer for all general-purpose automotive sealing. It cures quickly to a tough, strong bead for lasting seam sealing protection and is used on door skins, floor pans, trunk floors, roof seams and many other applications. This self-mixing system ensures a proper mix ratio every time - delivering a consistent cure rate and strength. Use with 3M Performance Manual Applicator 08117, 3M Manual Cartridge Applicator 08571 or 3M Performance Pneumatic Applicator 09930 (sold separately). Cure Time: 1 Hour Handling Time: 1-10 Minutes Work Time: 6 Minutes Paint Time: 15 Minutes.

Review: Works as described and cheaper that jobber price
Review: A real and solid product that seals body seams on automotive and industrial applications. Paintable and very strong.

## Features

- HIGH-PERFORMANCE: Two-part epoxy seals vertical and horizontal seams to match OEM seals
- METERED MIXING: Dual syringe cartridge eliminates the difficulty and mess of manual mixing
- NON-FLOWING: Heavy-bodied formula allows easy tooling for matching OEM seam sealer appearances
- QUICK CURE: Non-sag property aids during vertical applications
- SELF-MIXES: Makes a perfect formulation every time without mess
- For industrial/occupational use only. Not for consumer sale or use.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000PEW41E |
| Best Sellers Rank | #7,058 in Automotive ( See Top 100 in Automotive ) #2 in Automotive Paint Sealers #47 in Automotive Fillers, Adhesives & Sealants |
| Department | unisex-adult |
| Item model number | 08308 |
| Manufacturer | 3M |
| Product Dimensions | 9.65 x 5.59 x 19.56 cm; 226.8 g |

## Product Details

- **Brand:** 3M
- **Item dimensions L x W x H:** 9.7 x 5.6 x 19.6 centimeters
- **Item weight:** 8 Ounces
- **Material:** Resin
- **Style:** Epoxy

## Images

![3M 08308 Heavy-Bodied Seam Sealer, 200mL Cartridge, Black - Image 1](https://m.media-amazon.com/images/I/31FczHJ9gXL.jpg)
![3M 08308 Heavy-Bodied Seam Sealer, 200mL Cartridge, Black - Image 2](https://m.media-amazon.com/images/I/31sSDVIbKfL.jpg)
![3M 08308 Heavy-Bodied Seam Sealer, 200mL Cartridge, Black - Image 3](https://m.media-amazon.com/images/I/41+fwRa8ZoL.jpg)
![3M 08308 Heavy-Bodied Seam Sealer, 200mL Cartridge, Black - Image 4](https://m.media-amazon.com/images/I/41eSdgWeUPL.jpg)
![3M 08308 Heavy-Bodied Seam Sealer, 200mL Cartridge, Black - Image 5](https://m.media-amazon.com/images/I/41jJ6G3ZjfL.jpg)

## Questions & Answers

**Q: I'm doing a 1978  g 10  chevy short wheel base van drip rails ... how many will i need ?**
A: I used about one and a half on a 1966 Mustang drip rails.  The Mustang drip rails are a combined 120 linear inches.

**Q: Does this include any of the 3m mixing nozzle (pn 08193) that are typically included with these epoxies?**
A: Yes it came with two nozzles

**Q: Can this be applied over existing new 3m sealer? Had to put in an emergency bead to brave the rain and hoping this can go over and smooth it out.**
A: I had to do just that and it worked fine.  No problems at all

**Q: Is this a 1:1 mix?**
A: No. One cylinder has a larger diameter than the other. The special tips handle the mixing. You do need a special gun. I spent $90 on the 3M one, but I am told there are several others available.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by F***D on 14 September 2023*

Works as described and cheaper that jobber price

### ⭐⭐⭐⭐⭐ Review
*by I***H on 2 January 2026*

A real and solid product that seals body seams on automotive and industrial applications. Paintable and very strong.

### ⭐⭐⭐⭐⭐ Review
*by A***R on 18 October 2025*

Works great, I had plenty of working time with it in 75 degree weather. It bonds great to properly prepared surface. Cures hard in about 8 hrs at 75 degrees.

## Frequently Bought Together

- 3M Heavy-Bodied Seam Sealer, 08308, Two-Part, Self-Mixing, Automotive Epoxy, 200 ml/6.75 fl oz Cartridge , Black
- 3M Panel Bonding Adhesive 08115, OEM Recommended Two-Part Epoxy, 200 mL Cartridge, Bonds Metal & Composites for Auto Body Panel Repair (1 Cartridge)
- JES Innovations 200 ml (1:1 and 2:1) 26:1 High Thrust Dual Component Cartridge Gun

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**Shop now:** [https://www.desertcart.jp/products/345325323-3m-08308-heavy-bodied-seam-sealer-200ml-cartridge-black](https://www.desertcart.jp/products/345325323-3m-08308-heavy-bodied-seam-sealer-200ml-cartridge-black)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-30*