---
product_id: 5003941
title: "3M Bondo Liquid Hardener 1 Tube 0.37 fl oz., Use with Fiberglass Resin for Auto and Home Repairs Including Tubs, Showers, Sinks, Pools, Hot Tubs, and Boats, Waterproof Repair (00912)"
brand: "bondo"
price: "₩13424"
currency: KRW
in_stock: true
reviews_count: 8
category: "Bondo"
url: https://www.desertcart.kr/products/5003941-3m-bondo-liquid-hardener-1-tube-0-37-fl-oz
store_origin: KR
region: South Korea
---

# 100% waterproof repair Fast 20-min cure time Seamless resin hardener blend 3M Bondo Liquid Hardener 1 Tube 0.37 fl oz., Use with Fiberglass Resin for Auto and Home Repairs Including Tubs, Showers, Sinks, Pools, Hot Tubs, and Boats, Waterproof Repair (00912)

**Brand:** bondo
**Price:** ₩13424
**Availability:** ✅ In Stock

## Summary

> 🛠️ Fix it fast, fix it right — waterproof strength that lasts!

## Quick Answers

- **What is this?** 3M Bondo Liquid Hardener 1 Tube 0.37 fl oz., Use with Fiberglass Resin for Auto and Home Repairs Including Tubs, Showers, Sinks, Pools, Hot Tubs, and Boats, Waterproof Repair (00912) by bondo
- **How much does it cost?** ₩13424 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/5003941-3m-bondo-liquid-hardener-1-tube-0-37-fl-oz)

## Best For

- bondo enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Mixing:** Low viscosity formula ensures smooth, easy blending with fiberglass resin and fillers for flawless application.
- • **Rapid Repair Mastery:** Achieve full cure in just 20 minutes—get back on the road or project faster than ever.
- • **Waterproof Confidence:** Guaranteed 100% waterproof finish, perfect for auto bodies, boats, and home repairs exposed to moisture.
- • **Versatile Pro-Grade Use:** Engineered for industrial and occupational use, ideal for everything from tubs to hot tubs and vehicle restoration.
- • **Trusted Brand Reliability:** Backed by 3M’s legacy and a 4.7-star rating from 595+ professionals who demand durability and efficiency.

## Overview

3M Bondo Liquid Hardener is a professional-grade catalyst designed to chemically activate Bondo polyester fiberglass resin and metal reinforced fillers, delivering a fast-curing, 100% waterproof repair solution. Ideal for automotive, marine, and home applications, it ensures durable, seamless fixes with easy mixing and a quick 20-minute cure time.

## Description

Liquid Hardener mixes with Fiberglass Resin and Bondo Metal Reinforced Filler to create high-quality, long-lasting repairs. When hardener is mixed with product, a chemical reaction occurs to create a mixture that will deliver a strong, lasting repair. Our hardener is also easy to mix.

Review: 3M Bondo Hardener Review - I needed this to fix a fiberglass project on a vehicle I was restoring. The product works perfectly as expected from 3M products and I recommend using this for fiberglass or filler applications as it works very well. Easy to use and mix. Definitely the best value for the money!
Review: Works great - Works great

## Features

- Liquid hardener designed for Bondo polyester fiberglass resin and Bondo Metal Reinforced Filler requiring liquid hardener
- Creates chemical reaction with resin for fast curing
- Results in a 100% waterproof repair
- Great for repairing auto bodies and boats
- Easy mixing produces a better hardener and filler blend
- Use during the Fill stage of the 3M Body Repair System
- Flash point: 93.3 degrees_celsius
- For industrial/occupational use only. Not for consumer sale or use.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000BO6RUC |
| Best Sellers Rank | #29,392 in Automotive ( See Top 100 in Automotive ) #50 in Body Repair Putty |
| Brand | Bondo |
| Brand Name | Bondo |
| Color | Transparent |
| Compatible Material | Fiberglass |
| Container Type | Tube |
| Customer Reviews | 4.7 out of 5 stars 595 Reviews |
| Full Cure Time | 2E+1 Minutes |
| Global Trade Identification Number | 00076308009120 |
| Included Components | 1 Pack |
| Item Form | Not Aplicable |
| Item Package Quantity | 1 |
| Item Type Name | Bondo - 88960 |
| Item Weight | 18.14 g |
| Manufacturer | 3M |
| Material | Plastic |
| Material Type | Plastic |
| Model | 912 |
| Other Special Features of the Product | Fast Curing, Waterproof, Durable, Efficient |
| Special Feature | Fast Curing, Waterproof, Durable, Efficient |
| Specific Uses For Product | Masonry, Wall Repair |
| UPC | 076308009120 |
| Viscosity | Low Viscosity |
| Volume | 11 Milliliters |
| Warranty Description | Warranty |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Bondo
- **Item Form:** Not Aplicable
- **Material:** Plastic
- **Special Feature:** Fast Curing, Waterproof, Durable, Efficient
- **Specific Uses For Product:** Masonry, Wall Repair

## Images

![3M Bondo Liquid Hardener 1 Tube 0.37 fl oz., Use with Fiberglass Resin for Auto and Home Repairs Including Tubs, Showers, Sinks, Pools, Hot Tubs, and Boats, Waterproof Repair (00912) - Image 1](https://m.media-amazon.com/images/I/510z9MxUE5L.jpg)
![3M Bondo Liquid Hardener 1 Tube 0.37 fl oz., Use with Fiberglass Resin for Auto and Home Repairs Including Tubs, Showers, Sinks, Pools, Hot Tubs, and Boats, Waterproof Repair (00912) - Image 2](https://m.media-amazon.com/images/I/61mZDY3ajbL.jpg)
![3M Bondo Liquid Hardener 1 Tube 0.37 fl oz., Use with Fiberglass Resin for Auto and Home Repairs Including Tubs, Showers, Sinks, Pools, Hot Tubs, and Boats, Waterproof Repair (00912) - Image 3](https://m.media-amazon.com/images/I/51kmAo6uF7L.jpg)
![3M Bondo Liquid Hardener 1 Tube 0.37 fl oz., Use with Fiberglass Resin for Auto and Home Repairs Including Tubs, Showers, Sinks, Pools, Hot Tubs, and Boats, Waterproof Repair (00912) - Image 4](https://m.media-amazon.com/images/I/61Y7ICNdFqL.jpg)
![3M Bondo Liquid Hardener 1 Tube 0.37 fl oz., Use with Fiberglass Resin for Auto and Home Repairs Including Tubs, Showers, Sinks, Pools, Hot Tubs, and Boats, Waterproof Repair (00912) - Image 5](https://m.media-amazon.com/images/I/61PGNsToieL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 3M Bondo Hardener Review
*by N***A on December 14, 2025*

I needed this to fix a fiberglass project on a vehicle I was restoring. The product works perfectly as expected from 3M products and I recommend using this for fiberglass or filler applications as it works very well. Easy to use and mix. Definitely the best value for the money!

### ⭐⭐⭐⭐⭐ Works great
*by B***O on October 9, 2025*

Works great

### ⭐⭐⭐⭐⭐ Hardens
*by C***D on August 22, 2025*

Its a tube of hardener. And it hardens resin like is intended 👌😁

## Frequently Bought Together

- 3M Bondo Liquid Hardener 1 Tube 0.37 fl oz., Use with Fiberglass Resin for Auto and Home Repairs Including Tubs, Showers, Sinks, Pools, Hot Tubs, and Boats, Waterproof Repair (00912)
- 3M Bondo Fiberglass Resin 0.9 Pint, Stage 2, Waterproof Formula for Repairing, Resurfacing, or Rebuilding Metal, Wood, Fiberglass or Masonry Surfaces (401)
- Bondo Fiberglass Cloth, 20128, 8 Sq Ft

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-26*