---
product_id: 5003941
title: "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: "3m"
price: "€ 7.53"
currency: EUR
in_stock: true
url: https://www.desertcart.nl/products/5003941-bondo-liquid-hardener-1-tube-0-37-fl-oz-use
store_origin: NL
region: Netherlands
---

# 100% Waterproof repair Fast 20-min cure time Seamless resin hardener blend 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:** 3m
**Price:** € 7.53
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** 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 3m
- **How much does it cost?** € 7.53 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/5003941-bondo-liquid-hardener-1-tube-0-37-fl-oz-use)

## 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

- • **Rapid Cure Power:** Achieve full strength repairs in just 20 minutes—no downtime, just results.
- • **Effortless Mixing:** Low viscosity formula ensures smooth, easy blending with fiberglass resin and fillers.
- • **Waterproof Confidence:** Guaranteed 100% waterproof finish, perfect for boats, tubs, and auto bodies.
- • **Versatile Repair Solution:** Ideal for auto, marine, and home repairs including showers, sinks, and pools.
- • **Professional Grade Durability:** Trusted industrial formula by 3M for long-lasting, resilient fixes.

## Overview

3M Bondo Liquid Hardener is a professional-grade catalyst designed to mix seamlessly with Bondo fiberglass resin and metal reinforced fillers. It triggers a fast chemical cure within 20 minutes, delivering a 100% waterproof, durable repair ideal for automotive, marine, and home applications. Its low viscosity ensures easy mixing and a smooth finish, making it the go-to choice for efficient, long-lasting fixes.

## 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.

## 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 |
|---------------|-------|
| Brand | Bondo |
| Specific Uses For Product | Masonry, Wall Repair |
| Material | Plastic |
| Item Form | Not Aplicable |
| Special Feature | Fast Curing, Waterproof, Durable, Efficient |
| Color | Transparent |
| Item Package Quantity | 1 |
| Package Information | Tube |
| Item Volume | 11 Milliliters |
| Viscosity | Low Viscosity |
| Full Cure Time | 2E+1 Minutes |
| Water Resistance Level | Waterproof |
| Viscosity Level | Low |
| UPC | 076308009120 |
| Number of Pieces | 1 |
| Global Trade Identification Number | 00076308009120 |
| Manufacturer | 3M |
| Model | Bondo Liquid Hardener, Use with Fiberglass Resin, 0.37 Fl oz, 1 bottle |
| Item Weight | 0.64 ounces |
| Product Dimensions | 8 x 5 x 1 inches |
| Item model number | 912 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 912 |
| Special Features | Fast Curing, Waterproof, Durable, Efficient |

## Product Details

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

## Images

![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)

## 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 Netherlands*
*Store origin: NL*
*Last updated: 2026-01-27*