---
product_id: 528843598
title: "HARD-ON by woolwax™ 5 Gallon Pail Auto Truck Undercoating Permanent Black Water Based Corrosion Inhibitor Coating One Time Application Non-Rubber Stops Rust Chip Guard Sound Deadener Solvent Free"
brand: "woolwax"
price: "€ 783.16"
currency: EUR
in_stock: false
reviews_count: 2
url: https://www.desertcart.sk/products/528843598-hard-on-by-woolwax-5-gallon-pail-auto-truck-undercoating
store_origin: SK
region: Slovakia
---

# Water-based, low odor formula Hard shell, paint-like finish 5-10 years durable protection HARD-ON by woolwax™ 5 Gallon Pail Auto Truck Undercoating Permanent Black Water Based Corrosion Inhibitor Coating One Time Application Non-Rubber Stops Rust Chip Guard Sound Deadener Solvent Free

**Brand:** woolwax
**Price:** € 783.16
**Availability:** ❌ Out of Stock

## Summary

> 🛠️ Harden your ride with the ultimate one-time armor—because your truck deserves legendary protection!

## Quick Answers

- **What is this?** HARD-ON by woolwax™ 5 Gallon Pail Auto Truck Undercoating Permanent Black Water Based Corrosion Inhibitor Coating One Time Application Non-Rubber Stops Rust Chip Guard Sound Deadener Solvent Free by woolwax
- **How much does it cost?** € 783.16 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/528843598-hard-on-by-woolwax-5-gallon-pail-auto-truck-undercoating)

## Best For

- woolwax enthusiasts

## Why This Product

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

## Key Features

- • **Permanent Armor:** Dries to a rock-hard, chip-resistant shell—not rubbery, no peeling.
- • **Unmatched Longevity:** Protect your vehicle for up to a decade with a single application.
- • **Multi-Functional Shield:** Blocks rust, salt, moisture, road debris, and even deadens sound and vibration.
- • **Tailored for New Surfaces:** Specifically engineered for rust-free frames to maximize performance and durability.
- • **Clean & Comfortable Application:** Water-based and virtually odorless—spray indoors without the harsh fumes.

## Overview

HARD-ON by woolwax™ is a premium, water-based, permanent undercoating designed for rust-free vehicle frames. It forms a tough, paint-like black shell that guards against corrosion, road debris, salt, and moisture while also reducing noise and vibration. With a lifespan of 5-10 years, this one-time application coating is ideal for trucks, trailers, RVs, and more, delivering long-lasting, odor-free protection that professionals trust.

## Description

Woolwax Hard-On is a high performance, permanent 1-time hard shell coating. Not rubber. Permanent One time hard corrosion inhibiitor. Auto / truck undercoating. NOT rubber. The surface should be newer and rust free. Hard-On is developed to be applied on new surfaces. It is not intended to be used on surfaces with surface rust. (Use original Woolwax for rusted frames). If you are not sure that you want a permanent (cannot be removed) coating, please contact us for more information. Once applied, there are no do-overs. Please consider this carefully. Looking for a permanent 1-time hard shell coating for your truck frame or equipment? Hard-On by woolwax is what you need. Originally developed as a chip guard for trailer trucks this formula is perfect for any long term applications. Hard-On is water based , so it has almost no smell. Dries to the touch in about 1 hour, and after 72 hours it is fully cured. Hard-On by Woolwax is an excellent solution for wheel wells which is always a high wash area. Hard-On is a water based coating that can be used on any metal surface. No smell. Paint or spray on.

Review: Excellent product! - I've done 2 vehicles , one infinity and one rv so far and I am quite impressed. The color is bluish but does dry to 100 percent flat black as advertised. I used the wool wax pro gun and had 0 issues spraying. You do have to clean more frequently than woolwax creep n crawl but no more often than using latex paint. The bluish tint helps to tell when it is dry and did take 72 hours to turn full black, the creases in the one picture are after 48 hours and are still faintly blue but hard to the touch. Dry, well it's like armor. Together with the creep n crawl you can make your or your customers vehicle laugh at the winter and salt. The low odor and no overspray also contribute to how good of a product it is, some hard coatings are just unbearable to spray in my small garage. Hard on rocks!
Review: Tuff stuff - I didn’t have to apply it; so 5 stars. It a pain to apply, but so worth the results. Solid protection and performance. Lots great and cleans easily. Do your vehicle a favor and put this on it.

## Features

- Hard-On high performance permanent 1-time hard undercoating. NOT rubber.
- Hard-On is developed to be applied on newer surfaces. It is not intended to be used on surfaces with surface rust. (Use original Woolwax for rusted frames)
- Expected life expectancy is 5-10 years depending on vehicle use.
- Ideal product for very long-term vehicle protection as well as trailers, RV’s, school buses, motor homes, truck box trailers, delivery trucks, and more.
- This is NOT a rubber coating. It dries to a very hard shell paint-like black coating.
- Incredible durable protection from salt, rust, moisture, and road debris. Acts as a chip guard.
- Acts as a sound and vibration deadener.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B0BYW4LBQ7 |
| Best Sellers Rank | #1,354,112 in Automotive ( See Top 100 in Automotive ) #820 in Care Corrosion & Rust Inhibitors |
| Customer Reviews | 5.0 5.0 out of 5 stars (5) |
| Date First Available  | March 18, 2023 |
| Item model number  | wwho5 |
| Manufacturer  | woolwax |
| Product Dimensions  | 12 x 12 x 18 inches; 46 Pounds |

## Product Details

- **Brand:** woolwax
- **Item Form:** Liquid
- **Number of Items:** 1
- **Recommended Uses For Product:** For Paint Protection, For Corrosion Protection, For Chip Guard, For Sound Deadening
- **Specific Uses For Product:** Long-term vehicle protection, Chip guard, Sound deadener

## Images

![HARD-ON by woolwax™ 5 Gallon Pail Auto Truck Undercoating Permanent Black Water Based Corrosion Inhibitor Coating One Time Application Non-Rubber Stops Rust Chip Guard Sound Deadener Solvent Free - Image 1](https://m.media-amazon.com/images/I/51ZbuYdZOgL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent product!
*by B***S on December 11, 2023*

I've done 2 vehicles , one infinity and one rv so far and I am quite impressed. The color is bluish but does dry to 100 percent flat black as advertised. I used the wool wax pro gun and had 0 issues spraying. You do have to clean more frequently than woolwax creep n crawl but no more often than using latex paint. The bluish tint helps to tell when it is dry and did take 72 hours to turn full black, the creases in the one picture are after 48 hours and are still faintly blue but hard to the touch. Dry, well it's like armor. Together with the creep n crawl you can make your or your customers vehicle laugh at the winter and salt. The low odor and no overspray also contribute to how good of a product it is, some hard coatings are just unbearable to spray in my small garage. Hard on rocks!

### ⭐⭐⭐⭐⭐ Tuff stuff
*by J***G on February 2, 2024*

I didn’t have to apply it; so 5 stars. It a pain to apply, but so worth the results. Solid protection and performance. Lots great and cleans easily. Do your vehicle a favor and put this on it.

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**Shop now:** [https://www.desertcart.sk/products/528843598-hard-on-by-woolwax-5-gallon-pail-auto-truck-undercoating](https://www.desertcart.sk/products/528843598-hard-on-by-woolwax-5-gallon-pail-auto-truck-undercoating)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-10*