Best Motorcycle Tank Sealers: Easily Seal Pinholes and Seams

This fuel tank sealer kit stops rust and corrosion and can seal up to 25 gallons. The kit includes a cleaner and degreaser, rust remover, gloves, and instructions. The product is designed to permanently seal pinholes and weld seams, and it holds up to all types of fuels, additives, and most solvents.

The sealer is flexible, so it expands and contracts with the fuel tank. It comes with detailed directions, and there are several videos available online if you need additional help with application. When the lining is fully cured, it creates a very hard and durable skin. Overall, it works as advertised.

Unfortunately, there are a lot of steps to follow, and you must follow the instructions closely to prevent mistakes. The process is also labor-intensive, and it can take several hours to complete the job.

This contact adhesive and sealant comes in a two-ounce tube. It's impervious to gasoline, oil, alcohol, water, and most solvents. It's designed for automotive purposes, as well as for use on motorcycle gas tanks, and is a fast-drying formula: It sets in just two to three minutes. The glue/sealant also dries clear, and it bonds best with a scuffed or etched surface.

This sealant is very inexpensive and easy to use. One great advantage of this product is you can use it for a variety of different purposes, not just to seal a gas tank. People use it to seal carburetors and even to fix a leaky gas can. It's also a thin formula, so you can get it into fine cracks without any problems.

However, it's important to avoid getting this sealant on your skin because it's really hard to remove, even with paint thinner. As a result, you should wear latex gloves during application. It also has a strong odor, and it can be challenging to use if it's upside down.

POR-15 stops rust, corrosion, and fuel leaks and seals pinholes and seams. It creates a bond using a light gray, nonporous flexible film. It's resistant to all fuels, alcohols, and additives. This high-tech sealer is also effective against new Stage II fuels that contain more alcohol.

This product is known for its strength and fuel resistance. Used in conjunction with muriatic acid and some bolts, plus some elbow grease, it easily removes all the rust in a motorcycle gas tank.  It works great whether you use the POR-15 complete rust removal/metal prep system, or if you remove the rust yourself. It comes in an eight-ounce can, which is plenty to coat more than one small tank because a little bit goes a long way. It works well and seals the tank perfectly if you take your time.

One problem with this product is that it's thick and messy, so if you spill it on yourself or your surroundings it won't come off very easily. It also takes a few days to fully set and dry. In addition, the substance has a tendency to thicken, so it doesn't store very well. After it dries, it leaves a rough surface behind, which is unsightly but ok if it's underneath the tank.

This kit includes a pint of tank liner, a quart of Tank Prep A, and a pint of Tank Prep B. It creates a lining in your gas tank so it doesn't rust or corrode. It can be used as a preventative measure in both new and old tanks that use gasoline, gasohol, or diesel fuels.

The tank liner seals pinholes and prevents hairline cracks from leaking. This kit is easy to use and, as long as you follow the directions, you can remove extensive corrosion from your tank. It holds up over time, and overall it works as advertised.

One downside with this product is that you can't use it on plastic tanks, and it's not compatible with all fiberglass tanks. The company also recommends spot-testing it before application. In addition, application can be laborious.

This two-part epoxy can be used on fuel tanks, metal radiators, and other items and on surfaces such as iron, stainless steel, copper, brass, aluminum, and bronze. Once fully cured, it is resistant against petroleum, hydraulic fluids, and other harsh chemicals. Once you knead the two parts together, it takes five minutes to set and one hour to cure. It dries in a dark gray color.

This heavy-duty epoxy and adhesive is very versatile and can also be used on potable water tanks and lawn and garden equipment.  It's easy to mix the epoxy, and you only have to use what you need and the rest lasts a long time. It gets rid of leaks and is a solid, long-lasting fix. It's also a great value.

Some users, however, say this product works best as a temporary solution and not as a permanent fix. It also may not work as well on tanks that are dented, and if the surface isn't completely dry the epoxy may not cure completely.

The Red Kote tank sealer resists gasoline, diesel, alcohol, and other fuel additives. One quart will seal a 14-gallon tank. The product seals rust under the coating, so it won't flake off and plug up fuel line filters. It also reduces additional rust from forming. Since the formula is flexible, it doesn't crack and has a long lifespan.

Red Kote is easy to use as long as you follow the directions. It has tight adhering characteristics, and won't peel off, even on bent metal. Vibration and dents will not loosen the coating. Since it's such a bright color, coverage is very visible, and it seals leaks and pinholes you don't see. It flows well, and when it's cured, you no longer smell the solvent, so you know the tank is ready.

However, you should apply it in a ventilated area and wear goggles and a mask because inhaling the fumes can harm your nose and throat. Also, it can be messy during application, and it's so thin that it may require more than one coat.

This kit comes with everything you need to clean, prepare, and line a motorcycle, automotive, or other type of fuel tank. It includes one quart of cleaner, one quart of fuel tank prep, and one quart of fuel tank liner. The formula stays flexible, so it won't crack or peel. It is alcohol-resistant and applies in a bright blue color, so you can see the coverage.

The product seals leaks and pinholes that you aren’t visible. It covers and seals old rust and prevents new rust from forming. One kit is enough to treat a 12-20 gallon tank, which is much more than you need for a single motorcycle tank. The formula is resistant to gasoline, diesel fuel, ethanol, and other fuels and additives.

The biggest issue with this product is that you won't use all of it to repair one motorcycle gas tank, so you will have a lot left over unless you plan on using it for several tanks. Also, it's a little pricey compared to some other products.