
POR-15 Fuel Tank Sealer is a high-tech sealer and coating product that is impervious to all fuels, including diesel, E10 ethanol, and high-alcohol content fuels. It is designed to stop rust, corrosion, and small fuel leaks in metal fuel tanks. While the product is generally well-regarded for its effectiveness and ease of use, proper preparation and adhesion are crucial for optimal results. If the sealer is left to puddle inside the tank, it may require manual removal, as no solvent can dissolve it.
POR-15 Fuel Tank Sealer Characteristics
| Characteristics | Values |
|---|---|
| Purpose | Sealant for metal fuel tanks |
| Fuel Resistance | Impervious to all fuels, including diesel, E10 ethanol, and high alcohol content fuels |
| Rust and Corrosion Resistance | Stops rust and corrosion |
| Leak Prevention | Stops small fuel leaks and seals pinholes and seams |
| Colour | Silver |
| Application | Single application coating |
| Preparation | Requires thorough cleaning and preparation of the tank before application |
| Curing Time | Requires proper time to cure, at least 48 hours according to a customer |
| Removal | Difficult to remove from skin and surfaces |
| Coverage | 8 fl oz is enough to coat the inside of a 6-gallon fuel tank |
| Customer Feedback | Positive reviews for effectiveness, ease of use, and quality; some concerns about cost and mixed results for durability |
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What You'll Learn
- Puddling can be prevented by rotating the tank to a different position every 10-15 minutes
- The product is not suitable for fuel tanks with plastic parts
- It is important to wear gloves when applying the sealer
- The sealer is impervious to all fuels, including diesel and ethanol
- The product is praised for its ease of use and effectiveness

Puddling can be prevented by rotating the tank to a different position every 10-15 minutes
Puddling is a common issue with the POR-15 Fuel Tank Sealer. It is a paint-like product used as a coating and sealer for rusty, leaky gas tanks. The product is formulated for metal surfaces and is impervious to all fuels, including diesel, E10 ethanol, and high-alcohol content fuels. It is designed to stop rust, corrosion, and small fuel leaks.
To prevent puddling, it is essential to rotate the tank to a different position every 10-15 minutes during the application process. This ensures that the sealer does not pool in one area and allows for an even coating on all surfaces. By regularly changing the tank's position, the sealer can be distributed effectively, preventing puddling and ensuring proper coverage.
The preparation of the tank is crucial for the successful application of the POR-15 Fuel Tank Sealer. The tank must be free from plastic parts, contamination, and loose rust. It is recommended to use the POR-15 Cleaner Degreaser and POR-15 Metal Prep before applying the sealer to ensure the best adhesion. Additionally, the tank should be thoroughly cleaned, rinsed, and dried before applying the sealer.
By following the necessary preparation steps and rotating the tank during the application process, users can effectively prevent puddling and achieve a satisfactory result with the POR-15 Fuel Tank Sealer.
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The product is not suitable for fuel tanks with plastic parts
POR-15 Fuel Tank Sealer is a high-tech sealer that is impervious to all fuels, including diesel, E10 ethanol, and high-alcohol content fuels. It is formulated for metal and acts as a liner to stop rust, corrosion, and small fuel leaks. However, it is important to note that this product is not suitable for fuel tanks with plastic parts.
Before applying the sealer, it is crucial to ensure that the fuel tank is free from plastic components, as the sealer does not adhere well to plastic. Any plastic parts inside the tank should be removed beforehand. Additionally, the tank must be free from contamination and structurally sound, and properly cleaned. It is recommended to use POR-15 Cleaner Degreaser and POR-15 Metal Prep for the best adhesion and to follow the manufacturer's instructions for proper preparation and application.
The POR-15 Fuel Tank Sealer is designed to create a strong, impervious barrier against rust, corrosion, and ethanol fuels. It is an effective solution for sealing leaking fuel tanks, including those with pinholes and seams. Customers have reported positive results with this product, successfully sealing fuel tanks in cars, motorcycles, and kerosene heaters. It is important to follow the manufacturer's instructions and allow proper time for curing to ensure the best results.
While the POR-15 Fuel Tank Sealer is a popular choice for sealing fuel tanks, it is important to note that it may not be suitable for all applications. In some cases, alternative methods such as welding, soldering, or using a different tank restorer/sealer may be preferred. Additionally, the removal of POR-15 from a fuel tank can be challenging, and there is no straightforward solution provided by the manufacturer. Overall, while the POR-15 Fuel Tank Sealer is a reliable option for sealing metal fuel tanks, it is crucial to consider the specific requirements and characteristics of the tank before application.
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It is important to wear gloves when applying the sealer
It is important to wear gloves when applying the POR-15 Fuel Tank Sealer. This product is designed to form a rock-hard finish on automotive fuel tanks, and it will stick to your skin if you don't wear gloves. One user reported that the product "will literally not come off" their skin and that it can only be removed with tweezers in very small increments. Another user recommended using rubber gloves, as the product is difficult to get off your hands.
The application process for the POR-15 Fuel Tank Sealer involves coating the inside of the fuel tank with the product and then draining the excess. This means that it is likely that your hands and arms will come into contact with the product if you do not wear gloves.
In addition to wearing gloves, it is also important to follow the other safety precautions outlined in the product's instructions. The manufacturer recommends that users ensure their fuel tanks are free from plastic parts, contamination, and are structurally sound before applying the sealer. It is also important to properly prepare the tank by cleaning it with POR-15 Cleaner Degreaser and etching it with POR-15 Metal Prep for the best adhesion.
Overall, it is crucial to prioritize safety when working with products like the POR-15 Fuel Tank Sealer. By wearing gloves and following the manufacturer's instructions, you can help ensure a safe and successful application process.
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$99.99 $146.98

The sealer is impervious to all fuels, including diesel and ethanol
The POR-15 Fuel Tank Sealer is a high-tech sealer that is impervious to all fuels, including diesel, E10 ethanol, and high alcohol content fuels. It is formulated for metal surfaces and acts as a liner to prevent rust, corrosion, and small fuel leaks.
Before applying the sealer, it is important to ensure that the fuel tank is thoroughly cleaned and prepared. This includes removing any plastic parts, contamination, and loose rust, as well as using a cleaner degreaser and metal prep products to ensure proper adhesion.
The application process involves coating all surfaces of the tank with the sealer and then draining the excess after a certain period. It is crucial to avoid leaving any puddles of the sealer inside the tank, as this can affect the quality of the finish.
The POR-15 Fuel Tank Sealer is known for its effectiveness in sealing leaking fuel tanks, including those with pinholes and seams. Customers have reported positive results, highlighting its ease of use and good quality.
Overall, the POR-15 Fuel Tank Sealer is a reliable product for those seeking to restore their automotive fuel tanks and protect them from various types of fuel, including diesel and ethanol.
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The product is praised for its ease of use and effectiveness
The POR-15 Fuel Tank Sealer is a high-tech sealer that is impervious to all fuels, including diesel, E10 ethanol, and high alcohol content fuels. It is formulated for metal surfaces and acts as a liner to prevent rust, corrosion, and small fuel leaks. The product has received positive reviews from customers who have successfully used it to seal leaking fuel tanks, diesel tanks, and generator gas tanks.
One of the key strengths of the POR-15 Fuel Tank Sealer is its ease of use. Customers have praised the product for its simple application process, with some noting that it forms a rock-hard finish. The sealer comes with easy-to-understand directions, and users have achieved great results by following the recommended steps. These steps include cleaning and preparing the tank, applying the sealer, and allowing proper time for curing.
The effectiveness of the POR-15 Fuel Tank Sealer is evident in its ability to seal various types of tanks, including motorcycle fuel tanks, automotive fuel tanks, and kerosene heater tanks. Customers have reported that the sealer successfully stops leaks and protects against rust and corrosion, even in tanks with pinholes and seams. One customer review specifically mentioned that "fuel or oils do not faze it at all," highlighting the product's effectiveness in sealing fuel tanks.
The POR-15 Fuel Tank Sealer is also known for its durability. While some customers have reported mixed results regarding rust prevention and durability, others have shared that the sealer has lasted for years without any issues. One customer review mentioned that their fuel tank was sealed with POR-15 for 14 years without any problems, demonstrating the long-lasting protection offered by the product.
In addition to its effectiveness and ease of use, the POR-15 Fuel Tank Sealer is also versatile. It can be used for new fuel tanks, custom fuel tanks, and fuel tank repairs. The sealer is suitable for various vehicles, including cars, trucks, and motorcycles, making it a versatile solution for automotive restoration projects.
Overall, the POR-15 Fuel Tank Sealer is highly regarded for its ease of use, effectiveness, and durability. Customers have praised its ability to seal leaking tanks, protect against rust and corrosion, and provide long-lasting protection. The product's versatility and simple application process make it a popular choice for those seeking a high-quality fuel tank sealer.
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Frequently asked questions
The POR 15 Fuel Tank Sealer is used to seal fuel tanks and prevent leaks. It is also used to stop rust and corrosion.
First, the tank should be cleaned and dried thoroughly. Then, the POR 15 Metal Prep is applied to dissolve rust and etch the metal for better adhesion. After that, the tank is coated with the sealer and drained to remove excess. Finally, a fuel preservation and stabilizer solution is used to maintain the fuel system.
It is important to ensure that the tank is free from plastic parts and contamination before applying the sealer. Additionally, wearing gloves and protective gear is crucial as the sealer can be difficult to remove from the skin. Proper preparation and adhesion are essential for effective results.
Puddling of the sealer can occur if the tank is not rotated and drained properly. It is important to rotate the tank to different positions and drain excess sealer to avoid puddles. Puddles of sealer inside the tank can affect the quality of the coating and may require additional steps for removal.
Customer reviews report positive results with the sealer, successfully repairing leaking fuel tanks and preventing rust and corrosion. However, there are mixed results regarding durability, with some customers experiencing cracking and minor leaks. Proper preparation and following instructions are crucial for optimal results.

































