---
product_id: 263048133
title: "POR-15 Fuel Tank Sealer, Stops Rust, Corrosion and Leaks, Seals Pinholes and Seams, Non-Porous, Flexible Film, 16 Ounces"
brand: "por-15"
price: "$177"
currency: NZD
in_stock: true
reviews_count: 5
category: "Por 15"
url: https://www.desertcart.nz/products/263048133-por-15-fuel-tank-sealer-stops-rust-corrosion-and-leaks
store_origin: NZ
region: New Zealand
---

# Fuel-proof sealant Long-lasting cure time Rust & corrosion blocker POR-15 Fuel Tank Sealer, Stops Rust, Corrosion and Leaks, Seals Pinholes and Seams, Non-Porous, Flexible Film, 16 Ounces

**Brand:** por-15
**Price:** $177
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal it once, forget it forever – the ultimate fuel tank armor!

## Quick Answers

- **What is this?** POR-15 Fuel Tank Sealer, Stops Rust, Corrosion and Leaks, Seals Pinholes and Seams, Non-Porous, Flexible Film, 16 Ounces by por-15
- **How much does it cost?** $177 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/263048133-por-15-fuel-tank-sealer-stops-rust-corrosion-and-leaks)

## 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

- • **Pinholes & Seam Sealing:** Effectively fills leaks and pinholes, ensuring a non-porous, flexible protective film inside your tank.
- • **Comprehensive Prep System:** Works best with POR-15 Cleaner Degreaser and Metal Prep for flawless adhesion and maximum longevity.
- • **Permanent Rust Prevention:** Gold standard formula stops rust and corrosion dead in its tracks for a lifetime of durability.
- • **Unmatched Fuel Resistance:** Seals against all fuels including high-alcohol Stage II blends for ultimate protection.
- • **Professional-Grade Restoration:** Trusted by DIYers and pros alike for automotive fuel tank renewal and repair with a single application.

## Overview

POR-15 Fuel Tank Sealer is a high-tech, laboratory-formulated coating designed to permanently seal fuel tanks against rust, corrosion, leaks, and pinholes. Compatible with all fuels including high-alcohol Stage II blends, it creates a flexible, non-porous film that extends tank life. Ideal for automotive restoration, it requires thorough cleaning and prep for best results and is trusted by professionals and DIY enthusiasts for its unbeatable durability and fuel resistance.

## Description

Formulated and developed in our laboratories to meet the demand for a high-tech sealer impervious to all fuels, including the Stage II fuels which have a high alcohol content. POR-15 Fuel Tank Sealer has superior strength and fuel resistance. This sealer protects against failure due to rust, fixes pinhole leaks, and ensures a long lifespan for your gas tank. Great for new fuel tanks, custom fuel tanks, and fuel tank repairs. For best results use POR-15 Cleaner Degreaser and POR-15 Metal Prep before applying Fuel Tank Sealer. POR-15 Fuel Tank Repair KITS are also available. Formerly U. S. STANDARD FUEL TANK SEALER

Review: The same stuff I disliked about this product (this Tank Sealer sticks to EVERYTHING, and the preparation to use it takes patience and time) are the same things that make the results so spectacular! Yes, it takes a lot of time to do the prep (mostly clock time for things to soak), and yes the Tank Sealer is hard to remove from stuff (so wear gloves, cover the outside of the tank with painter's tape and plastic), but that means it seals your tank and you won't have to worry about it again. The whole process consists of 3 or 4 steps. Step (1) is POR-15 Cleaner Degreaser (avail on desertcart) - removes any fuel varnish or other coatings from the inside of the tank. Step (2) is POR-15 Metal Prep (avail on desertcart) - removes rust, etches the metal for better adhesion of the Tank Sealer, and chemically adjust the pH of the surface, too. Each of these steps takes time, because you have to slosh the stuff around in the tank and then leave the tank in various positions to ensure that the "stuff" has time to work on the metal everywhere inside the tank. Then Step (3) is this stuff - the POR-15 Tank Sealer. This goes in and you spend a good while rotating the tank around slowly so this stuff will coat the entire surface of the inside of the tank. That took some finagling for me - because my tank has two drain pipes that run from up by the fuel filler neck to the bottom of the tank where they emerge near the fuel pump. So I built a special paint brush from a cheap 1" brush and a coat hanger so I could bend it into a shape to get to the pipes through the vacant fuel pump hole. So what is the 4th step? Well, if you have a LOT of rust (see my first 2 pics, which is actually moderate rust), then Step (0) is to use Evapo-Rust to get it out. This takes time. I had my tank soaking with this stuff in it for 4 days, sloshing it around and leaving it in a different orientation every few hours to make sure every internal surface had its share of Evapo-Rust time. So doing Step (0) took me four days. Yup, I let it really soak to get ALL the rust out. Then another day or so sloshing around doing Steps (1) and (2). Then you VERY CAREFULLY dry the tank (best to let it get toasty hot in the sunshine after you have dried it out initially). Then you do Step (3) - this POR-15 Tank Sealer. You do the same thing, you slosh it around in there until the entire inside surface is coated. Then you pour out the excess. I actually turned the tank upside down and used a spoon to get the extra paint out. Whatever method you use, don't leave any puddles of the Tank Sealer inside the tank. Then you leave it for 4 days! No Less! Make sure that stuff is completely cured before you put everything back together and put fuel in it. I spent about 11 or 12 calendar days (on and off, of course for soak time) from start to finish, and you can see the result in Picture #3! Couldn't be more pleased. Some quick pointers: 1) Buy some Oatey or other pipe plugs to plug the tank holes. I used a conical rubber plug with a tightening screw in it for the fuel filler, and a cylindrical 2.5" pipe plug with a tightening screw for the fuel pump hole. desertcart has plenty of options, I am sure they have ones that will fit YOUR fuel tank. 2) Use painter's tape (not duct tape because it may pull paint off) and plastic sheeting to wrap your entire tank right up to the holes with the plugs. That way, any stray Tank Sealer won't get on the outside of the tank and mess up your paint job - which it will if you leave it for long. 3) Wear gloves, because this stuff sticks to your hands apparently just about as well as it sticks to the tank. 4) Do all the fluid changes and so forth OUTSIDE where you aren't going to make a mess inside your nice house or shop. 5) Don't rush it and make sure to follow the product's directions carefully - and you'll get great results, too!
Review: We just rescued a 100 gallon diesel fuel transfer tank with this. There was no way to drain all of the diesel fuel out of the tank so We went completely against the instructions. Wecleaned the rust off of the bottom, sanded, used phosphoric acid, and then poured this entire pint can all over the bottom and spread it out with brushes. We went home for the weekend and came back to an ugly looking mess on the bottom lol. Sprayed the tank with white paint. But after 4 months the tank has not leaked since. Pretty darn good for half-azzing something!

## Features

- ✅ WHY CHOOSE POR-15 FUEL TANK SEALER? POR-15 Tank Sealer is specifically formulated to provide a permanent seal with superior strength and resistance to all fuels, including the new Stage II fuels which have a high alcohol content.
- ✅ STOP RUST - POR-15 is the gold standard in rust prevention, and our Fuel Tank Sealer is no exception. Formulated and developed in our laboratories due to the demand for a high-tech sealer impervious to all fuels, POR-15 is essential in preventing rust and corrosion for long lasting results.
- ✅ PREP FOR SUCCESS - Drain all fuel from tank, remove tank from vehicle, and clean out tank. All fuel tanks are dirty and have to be cleaned out before sealing. If you try to seal a tank without cleaning it first, the new coating will fail, because Tank Sealer won’t stick to gum and varnish. After taking preliminary steps for cleaning and prep, use as directed for an excellent finish.
- ✅ WHEN DO I NEED THIS? – POR-15 Fuel tank sealer is perfect for automotive restoration. Renew your car, truck, or motorcycle fuel tank through our simple, single application coating. Allow proper time to cure for impervious protection from fuel, alcohol, corrosion and rust.
- ✅ OUR SATISFACTION COMMITMENT - At POR-15 we strive to bring the ultimate in rust prevention. Known for the unbeatable 3-step stop rust system, POR-15 is trusted by DIY & Professionals. We are committed to innovation, quality control, and excellent customer service. If you are not satisfied, let us know & we’ll do everything we can to make it right!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00B3I2NWG |
| Best Sellers Rank | #26,050 in Automotive ( See Top 100 in Automotive ) #109 in Automotive Fillers, Adhesives & Sealants |
| Item model number | 49208 |
| Manufacturer | POR-15 |
| Product Dimensions | 3.25 x 3.25 x 4 cm; 453.59 g |

## Product Details

- **Brand:** POR-15
- **Item dimensions L x W x H:** 32 x 32 x 40 millimeters
- **Item weight:** 454 g
- **Material:** Resin
- **Style:** Fuel tank coating

## Images

![POR-15 Fuel Tank Sealer, Stops Rust, Corrosion and Leaks, Seals Pinholes and Seams, Non-Porous, Flexible Film, 16 Ounces - Image 1](https://m.media-amazon.com/images/I/61i89VESjQS.jpg)
![POR-15 Fuel Tank Sealer, Stops Rust, Corrosion and Leaks, Seals Pinholes and Seams, Non-Porous, Flexible Film, 16 Ounces - Image 2](https://m.media-amazon.com/images/I/91WU656VREL.jpg)

## Questions & Answers

**Q: what size tank will a pint seal?**
A: Easily an 18-gallon tank - I had plenty left over with mine.  I could probably have sealed even a 20 to 22-gallon tank.

**Q: I'm having my tank powder coated after I seal it. Will this stuff be ok baking at 400 degrees to cure powder or should I use after its painted**
A: I would recommend powder coating first then applying the sealant! The sealant has a heat limit of about 400 degrees. Although I would clean the inside then wait till after the powder coating to use the metal prep & sealant.

**Q: Could you use this to protect and seal the outside of a cars rusted gas tank?**
A: Very unlikely to seal a tank from the outside. Use a fiberglass tank repair from an automotive store. Even then...not too likely. This would be really expensive paint for just cosmetic purposes.

**Q: Will this work to seal plastic gas tanks**
A: Hi Renee! If You Have A Plastic Tank That Is Leaking I Would Suggest A Soldering Gun (Heat) To Repair Leak/Crack. If Your Tank Is Nasty Inside I Would Suggest A Commercial Cleaning Product. POR 15 Needs A Rough Surface To Adhere To. I Would Not Suggest Using POR15 On A Plastic Tank. Good Luck!

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by W***S on 22 August 2018*

The same stuff I disliked about this product (this Tank Sealer sticks to EVERYTHING, and the preparation to use it takes patience and time) are the same things that make the results so spectacular! Yes, it takes a lot of time to do the prep (mostly clock time for things to soak), and yes the Tank Sealer is hard to remove from stuff (so wear gloves, cover the outside of the tank with painter's tape and plastic), but that means it seals your tank and you won't have to worry about it again. The whole process consists of 3 or 4 steps. Step (1) is POR-15 Cleaner Degreaser (avail on Amazon) - removes any fuel varnish or other coatings from the inside of the tank. Step (2) is POR-15 Metal Prep (avail on Amazon) - removes rust, etches the metal for better adhesion of the Tank Sealer, and chemically adjust the pH of the surface, too. Each of these steps takes time, because you have to slosh the stuff around in the tank and then leave the tank in various positions to ensure that the "stuff" has time to work on the metal everywhere inside the tank. Then Step (3) is this stuff - the POR-15 Tank Sealer. This goes in and you spend a good while rotating the tank around slowly so this stuff will coat the entire surface of the inside of the tank. That took some finagling for me - because my tank has two drain pipes that run from up by the fuel filler neck to the bottom of the tank where they emerge near the fuel pump. So I built a special paint brush from a cheap 1" brush and a coat hanger so I could bend it into a shape to get to the pipes through the vacant fuel pump hole. So what is the 4th step? Well, if you have a LOT of rust (see my first 2 pics, which is actually moderate rust), then Step (0) is to use Evapo-Rust to get it out. This takes time. I had my tank soaking with this stuff in it for 4 days, sloshing it around and leaving it in a different orientation every few hours to make sure every internal surface had its share of Evapo-Rust time. So doing Step (0) took me four days. Yup, I let it really soak to get ALL the rust out. Then another day or so sloshing around doing Steps (1) and (2). Then you VERY CAREFULLY dry the tank (best to let it get toasty hot in the sunshine after you have dried it out initially). Then you do Step (3) - this POR-15 Tank Sealer. You do the same thing, you slosh it around in there until the entire inside surface is coated. Then you pour out the excess. I actually turned the tank upside down and used a spoon to get the extra paint out. Whatever method you use, don't leave any puddles of the Tank Sealer inside the tank. Then you leave it for 4 days! No Less! Make sure that stuff is completely cured before you put everything back together and put fuel in it. I spent about 11 or 12 calendar days (on and off, of course for soak time) from start to finish, and you can see the result in Picture #3! Couldn't be more pleased. Some quick pointers: 1) Buy some Oatey or other pipe plugs to plug the tank holes. I used a conical rubber plug with a tightening screw in it for the fuel filler, and a cylindrical 2.5" pipe plug with a tightening screw for the fuel pump hole. Amazon has plenty of options, I am sure they have ones that will fit YOUR fuel tank. 2) Use painter's tape (not duct tape because it may pull paint off) and plastic sheeting to wrap your entire tank right up to the holes with the plugs. That way, any stray Tank Sealer won't get on the outside of the tank and mess up your paint job - which it will if you leave it for long. 3) Wear gloves, because this stuff sticks to your hands apparently just about as well as it sticks to the tank. 4) Do all the fluid changes and so forth OUTSIDE where you aren't going to make a mess inside your nice house or shop. 5) Don't rush it and make sure to follow the product's directions carefully - and you'll get great results, too!

### ⭐⭐⭐⭐⭐ Review
*by C***E on 1 November 2025*

We just rescued a 100 gallon diesel fuel transfer tank with this. There was no way to drain all of the diesel fuel out of the tank so We went completely against the instructions. Wecleaned the rust off of the bottom, sanded, used phosphoric acid, and then poured this entire pint can all over the bottom and spread it out with brushes. We went home for the weekend and came back to an ugly looking mess on the bottom lol. Sprayed the tank with white paint. But after 4 months the tank has not leaked since. Pretty darn good for half-azzing something!

### ⭐⭐⭐⭐⭐ Review
*by E***T on 17 January 2026*

It is worth the money.

## Frequently Bought Together

- POR-15 Fuel Tank Sealer, Stops Rust, Corrosion and Leaks, Seals Pinholes and Seams, Non-Porous, Flexible Film, 16 Ounces
- 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 New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-18*