---
product_id: 3815334
title: "POR-15 Rust Preventive Coating — Non-Porous Protective Barrier, 4 fl oz, Gloss Black, Pack of 6"
brand: "por-15"
price: "$210.34"
currency: USD
in_stock: true
reviews_count: 13
category: "Por 15"
url: https://www.desertcart.us/products/3815334-por-15-rust-preventive-coating-non-porous-protective-barrier-4
store_origin: US
region: United States of America
---

# Moisture-cured fast drying Waterproof & chemical resistant Permanent rust barrier POR-15 Rust Preventive Coating — Non-Porous Protective Barrier, 4 fl oz, Gloss Black, Pack of 6

**Brand:** por-15
**Price:** $210.34
**Availability:** ✅ In Stock

## Summary

> 🛠️ Stop Rust in Its Tracks — Permanently Protected, Professionally Perfected!

## Quick Answers

- **What is this?** POR-15 Rust Preventive Coating — Non-Porous Protective Barrier, 4 fl oz, Gloss Black, Pack of 6 by por-15
- **How much does it cost?** $210.34 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/3815334-por-15-rust-preventive-coating-non-porous-protective-barrier-4)

## Best For

- por-15 enthusiasts

## Why This Product

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

## Key Features

- • **UV-Smart Finish:** Semi-gloss black finish requires topcoat only for sun-exposed surfaces, maximizing durability.
- • **Pro-Grade Reliability:** Trusted by DIYers and pros alike for automotive, marine, and industrial use.
- • **Moisture-Activated Cure:** Dries faster with moisture, delivering a hammer-tough finish in just hours.
- • **Unmatched Rust Immunity:** Forms an impenetrable, non-porous shield that stops rust forever.
- • **Versatile Surface Protection:** Adheres flawlessly to metal, wood, fiberglass, concrete, and bricks.

## Overview

POR-15 Rust Preventive Coating is a semi-gloss black, moisture-cured, oil-based coating that creates a permanent, non-porous barrier against rust and corrosion. Ideal for metal and porous surfaces, it dries to a rock-hard finish resistant to chemicals, water, and abrasion. Widely trusted in automotive, marine, and industrial sectors, it requires topcoating only when exposed to UV light, ensuring long-lasting protection and professional-grade results.

## Description

Absolute Coatings (POR15) Rust Preventive Six Pack, Gloss Black, 4 oz. part #:POR-45006 • Single component permanent moisture cured urethane • Non-porous coating • Chemical resistant • Self-leveling when applied with a brush • Uses: automotive, marine, industrial, and home • Protects your investment • Completely waterproof • Abrasion chemical, stain, and impact resistant • Effectively adapts to the expansion and shrinkage of surface caused by temperature changes • Does not crack, chip, or peel from the surface substrate • Eliminates the need for a sacrificial zinc primer system • Heat resistant up to 450?F / 232?C

Review: Great stuff, nice finish, went on well - I have two lally columns in my garage that sweat in warm, humid weather since they cool off at night then attract condensation as the warm moist air gets in the garage when the doors are open. Water + steel = rust. I epoxied my garage floor, and pretty soon had rust stains in the epoxy from the columns. Grrr. The columns are a good 60+ years old, so pretty pitted. I hit them with a wire brush, then realized 80 grit sandpaper was a lot faster on the curved surface, and took off a fair amount of rust. I ended up getting the surface smoother than I had thought which became apparent as I applied this product. The product itself is thinner than latex paint, but a little thicker than water, so you have to be careful about drips. It spreads very well. I used less than 1/2 a 1 pint can to do two coats on the two lally columns. There were a couple spots where it initially covered, but didn't adhere, sort of like how water won't adhere to oil spots. I just went over those spots, working it in, and eventually it covered and adhered. The instructions say minimum two coats and I agree, if only to make sure you get full coverage. I waited 3 hours before putting on the second coat. The first coat was a mix of slightly tacky to very tacky, so I probably could have left it another hour or so. Interestingly, I didn't want to go through two brushes, so I left the leftover product from the first coat in the paint bucket I was using, with the brush in the product/not exposed to air, and the whole thing sat while I waited for the first coat to dry. This is not how the manufacturer recommends you do it. The remaining product in the paint bucket had thickened slightly, and so went on a bit thicker, but it still went on and spread, but much thicker. For my purpose, thicker is probably OK. It seemed to adhere just fine. This stuff levels like a dream - even with the second coat being thick, each pass left brush marks which quickly leveled out to perfectly smooth. The resulting finish was perfectly semi-gloss (like a text book definition of semi-gloss) and very, very smooth. I thought I'd just get the rust covered, and be stuck with the pitting of the old columns, but between the sanding and the superior leveling, the columns look amazing. Much better than I expected. For clean up, I found I could wipe up drops off the epoxy floor if I got to them quickly, and it all came up. I did get a drop on my face, looked like a Cindy Crawford mole, was probably on for 20 mins until my wife passed by and pointed it out. Aggressive scraping with a nail and soapy water took it off with some resulting abrasion of the skin but not bad. I did wear gloves as I painted. This is now my go-to coating for metal products with the potential to rust.
Review: Good rust preventative holds up and stops rust while looking good. - POR 15 never disappoints, goes on fairly smooth, protects better than most coatings, very strong finish and good appearance. Anything I want to protect this is my go to

## Features

- Rust Preventive Coating: Protects metal surfaces from water, chemicals, salt, corrosive contaminants and everyday wear and tear. POR-15 Rust Preventive when put to the test withstood 168 hrs ASTM B117 salt spray with no rust or pitting
- Cured By Moisture: POR-15 dries faster when moisture is present. Once cured, the coating forms a hard, impact-tough finish that resists chipping, cracking and peeling
- Application: Remove grease, oil, and other foreign substances using POR-15 water-based Cleaner Degreaser followed with POR-15 Metal Prep to etch the surface and neutralize rust. Stir POR-15 Rust Preventive Coating thoroughly, DO NOT SHAKE. Always apply thin coats, minimum of two. May be recoated or top coated when dry to the touch, typically 2 to 5 hours. Topcoat when surface will have exposure to UV light
- Industry Applications: Automotive, Farm, industrial, commercial marine, and construction industries all use POR-15 Rust Preventive Coating to protect valuable equipment against rust, abrasion, and corrosion. Our coating has excellent surface tolerance on porous surfaces, such as wood, fiberglass, concrete, bricks, and more

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00J2VULQ6 |
| Age Range Description | Adult |
| Best Sellers Rank | #2,046 in Automotive ( See Top 100 in Automotive ) #18 in Care Corrosion & Rust Inhibitors |
| Brand | POR-15 |
| Brand Name | POR-15 |
| Color | Gloss Black |
| Color Code | Gloss Black |
| Container Type | Can |
| Coverage | 36 sq ft total with two coats applied |
| Customer Reviews | 4.7 out of 5 stars 11,959 Reviews |
| Dry Time In Hours | 4 |
| Finish Type | Gloss |
| Full Cure Time | 5 hours |
| Global Trade Identification Number | 00051491450065 |
| Included Components | 6 Can |
| Indoor Outdoor Usage | Outdoor |
| Is Waterproof | True |
| Item Form | Liquid |
| Item Type Name | Moisture Cure Primer |
| Item Volume | 24 fluid ounces |
| Item Weight | 2.2 pounds |
| Manufacturer | POR-15 |
| Model Name | 45006-6PK |
| Model Number | 45006 |
| Paint Type | Watercolor |
| Part Number | 45006 |
| Size | 4 Fl Oz (Pack of 6) |
| Special Feature | Scratch Resistant |
| Special Features | Scratch Resistant |
| Specific Uses For Product | Interior/Exterior |
| Surface Recommendation | Metal |
| UPC | 051491450065 |
| Unit Count | 24 Fluid Ounces |

## Product Details

- **Brand:** POR-15
- **Color:** Semi Gloss Black
- **Finish Type:** Semi-Gloss
- **Item Volume:** 1 quarts
- **Paint Type:** Oil
- **Size:** 32 Fl Oz (Pack of 1)
- **Special Feature:** Chemical Resistant, Moisture Barrier, Non-Porous, Permanent
- **Specific Uses For Product:** Interior/Exterior
- **Surface Recommendation:** Metal, Wood, Fiberglass, Concrete, Bricks
- **Unit Count:** 32 Fluid Ounces

## Images

![POR-15 Rust Preventive Coating — Non-Porous Protective Barrier, 4 fl oz, Gloss Black, Pack of 6 - Image 1](https://m.media-amazon.com/images/I/91rG83eHfAL.jpg)
![POR-15 Rust Preventive Coating — Non-Porous Protective Barrier, 4 fl oz, Gloss Black, Pack of 6 - Image 2](https://m.media-amazon.com/images/I/71g1lVMgyRL.jpg)
![POR-15 Rust Preventive Coating — Non-Porous Protective Barrier, 4 fl oz, Gloss Black, Pack of 6 - Image 3](https://m.media-amazon.com/images/I/613fCS3IHdL.jpg)
![POR-15 Rust Preventive Coating — Non-Porous Protective Barrier, 4 fl oz, Gloss Black, Pack of 6 - Image 4](https://m.media-amazon.com/images/I/61afUOJnfYL.jpg)
![POR-15 Rust Preventive Coating — Non-Porous Protective Barrier, 4 fl oz, Gloss Black, Pack of 6 - Image 5](https://m.media-amazon.com/images/I/61kGL6T-AUL.jpg)

## Available Options

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

## Questions & Answers

**Q: can you paint over this product? which paint is best latex or oil based.  i am looking to use this on a rusting dive stand.**
A: I have used Por-15 on an extensive restoration of a car.  It can be painted over, but you really want to make sure you get your primer on while Por-15 is still slightly tacky.  this will allow the primer and then paint to stick better.  it is UV sensitive and will change colors if it is exposed to the sun.  On my project, I used it primarily under the car or in areas where there will be minimal or no UV exposure.

**Q: whats the difference between this and the black por 15 ? dose it stop and protect the same?**
A: This is a top coat for por15. Por 15 offers very little uv protection so if you paint something that is going to be out in the sun you have to paint over the por 15 with a por 15 top coat.

**Q: how much would it take to cover a entire 1/2 ton truck? would a gallon do 2 coats?**
A: I used a spray-gun to do the undercarriage on my Vanagon and I finished with 1/2 gallon left. If you brush it than one gallon is more than enough for your truck. Don't get it on your skin! Took me 2 weeks to get it off. This stuff is awesome.

**Q: Does the por 15 clear need to have a top coat? If so what would that be?**
A: You should use a top coat on any of the POR-15 rust preventative paints. You can use any automotive paint as a top coat.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great stuff, nice finish, went on well
*by M***N on June 30, 2015*

I have two lally columns in my garage that sweat in warm, humid weather since they cool off at night then attract condensation as the warm moist air gets in the garage when the doors are open. Water + steel = rust. I epoxied my garage floor, and pretty soon had rust stains in the epoxy from the columns. Grrr. The columns are a good 60+ years old, so pretty pitted. I hit them with a wire brush, then realized 80 grit sandpaper was a lot faster on the curved surface, and took off a fair amount of rust. I ended up getting the surface smoother than I had thought which became apparent as I applied this product. The product itself is thinner than latex paint, but a little thicker than water, so you have to be careful about drips. It spreads very well. I used less than 1/2 a 1 pint can to do two coats on the two lally columns. There were a couple spots where it initially covered, but didn't adhere, sort of like how water won't adhere to oil spots. I just went over those spots, working it in, and eventually it covered and adhered. The instructions say minimum two coats and I agree, if only to make sure you get full coverage. I waited 3 hours before putting on the second coat. The first coat was a mix of slightly tacky to very tacky, so I probably could have left it another hour or so. Interestingly, I didn't want to go through two brushes, so I left the leftover product from the first coat in the paint bucket I was using, with the brush in the product/not exposed to air, and the whole thing sat while I waited for the first coat to dry. This is not how the manufacturer recommends you do it. The remaining product in the paint bucket had thickened slightly, and so went on a bit thicker, but it still went on and spread, but much thicker. For my purpose, thicker is probably OK. It seemed to adhere just fine. This stuff levels like a dream - even with the second coat being thick, each pass left brush marks which quickly leveled out to perfectly smooth. The resulting finish was perfectly semi-gloss (like a text book definition of semi-gloss) and very, very smooth. I thought I'd just get the rust covered, and be stuck with the pitting of the old columns, but between the sanding and the superior leveling, the columns look amazing. Much better than I expected. For clean up, I found I could wipe up drops off the epoxy floor if I got to them quickly, and it all came up. I did get a drop on my face, looked like a Cindy Crawford mole, was probably on for 20 mins until my wife passed by and pointed it out. Aggressive scraping with a nail and soapy water took it off with some resulting abrasion of the skin but not bad. I did wear gloves as I painted. This is now my go-to coating for metal products with the potential to rust.

### ⭐⭐⭐⭐⭐ Good rust preventative holds up and stops rust while looking good.
*by R***R on August 1, 2026*

POR 15 never disappoints, goes on fairly smooth, protects better than most coatings, very strong finish and good appearance. Anything I want to protect this is my go to

### ⭐⭐⭐⭐⭐ I'm a Believer!
*by T***F on November 12, 2016*

While I needed to deal with some serious "rust remediation" issues with the under-body and frame of my '02 Dakota (after I neglected it through a couple of Northeastern winters), my initial use for POR-15 was the perpetually rusting brake calipers and drums: None of the paint products I had previously used held up for more than 6 to 9 months before discoloration and rusting set in again - even when applied to new (and clean) parts. The only prep I did was to use a hand-held wire brush to remove loose scale / dirt, and degreased with aerosol brake parts cleaner. For my purposes, sponge brush applicators have generally been best when used with a "dabbing" motion on rough-castings to provide uniform coverage and penetration. As has been noted by others: You may be pleasantly surprised by the coverage you can achieve. I was able to apply a single coat to both calipers / support brackets, both drums / backing plates, and the lower control arms with a single 4 oz. can. I used about 6 sponge brushes (2 inch) to do this, so I suggest buying them in bulk. I initially purchased the 6-pack of 4 oz. cans due to concerns about shelf-life for the larger quantities, but learned from experience that the iron oxide acts as a catalyst for POR-15, so applying it straight from a can gradually introduces small amounts of rust to the remaining material, causing it to thicken over the course of a few days use. This may also be a reason for limited shelf-life issues, so you should dispense POR-15 to another container for a small job, or a for larger task performed over a period of time. What truly impressed me was durability: I had removed the brake drums and applied the POR-15, allowing 24 hours for it to "cure". In the meantime, I decided to replace the brake shoes. Once cured, the POR-15 had a uniform gloss black appearance, although I could detect a faint reddish hue in bright sunlight. This was fine with me, as it was only a single coat, and I was curious as to how it would hold up over time. I reinstalled the drums, and then had some issues with excessive drag while adjusting the new shoes. When I tried to remove the drum to check my installation, it didn't budge, so I used a hammer around the rim to assist - and then realized that wasn't a very bright idea with any painted surface - but the POR-15 simply conformed to the obvious dings, and refused to come off even when I tried scuffing the dings with a wire brush. From experience: The only "problems" I have had have been prep-related - all surfaces to be treated need to be THOROUGHLY degreased, and all loose material must be removed. Use good portable lighting if needed. Be especially observant to remove rust "blisters" that form on areas like frame rails - using a cupped twisted strand wire brush on a grinder will frequently only "polish" the blisters without removing them, and rust will start to show again at those spots within a few months. The better tool to use is an air-powered needle scaler that will break the blisters. I've seen that with areas that were properly cleaned and prepped the POR-15 even resists passes with the scaler or powered brush. At this point, after 6 months and multiple pressure washes, the POR-15 treated brake parts still have a fresh appearance, with no rust returning. I have only a few remaining areas under the truck to treat, and I still have a can left from the 6 pack. I won't hesitate to reorder more if needed, and highly recommend it, along with the POR Patch, as effective solutions for persistent rust problems.

## Frequently Bought Together

- POR-15 Rust Preventive Coating, Stop Rust and Corrosion Permanently, Anti-rust, Non-porous Protective Barrier, 32 Fluid Ounces, Semi-gloss Black
- POR-15 Metal Prep, Metal Etching Rust Neutralizer, Non-flammable and Water-based, 32 Fluid Ounces, 1-quart
- POR-15 Cleaner Degreaser, Non-flammable and Water Based, Removes Grease, Oil and Surface Debris, 1-quart

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-10-06*