7 Best Epoxy For Plastic Gas Tank Repair in 2024

Best Overall

J-B Weld 2110 Metal Fuel Tank Repair Kit

Editor’s Rating: 4.8/5.0
  • Quick setting and curing time
  • High strength adhesion
  • Chemical-resistant 
  • No need to remove fuel from the tank before the repair 

Most Affordable

Blue Magic 6522KTRI QuikSteel Plastic Tank Repair Kit

Editor’s Rating: 4.8/5.0
  • Durable bond
  • Instruction manual provided
  • Affordable
  • Post-curing color is neutral
  • 5 minutes setting time

For Heavy Duty

Versachem 90180 Heavy-Duty Fuel Tank Repair Kit

Editor’s Rating: 4.7/5.0
  • Job done in less than 20 minutes
  • Chemical/Fuel Resistant
  • 1500 PSI strength 
  • Water and temperature resistant

When you discover a gas tank leak, it is essential to act quickly and get repairs done to avoid any mishap. And since speed and efficiency matter here, using the most sought-after epoxy for plastic gas tank repair is the best solution. 

Finding the best epoxy for plastic gas tank repair will be your first step toward quickly getting back on the road if you have damaged your fuel tank. Let’s take a look at some of the alternatives you have today so you can decide which one best suits your requirements.

  • The best overall epoxy for plastic gas tank repair is J-B Weld 2110 Metal Fuel Tank Repair Kit as it has greater tensile strength and fuel resistance.
  • If you are looking for an affordable option then Blue Magic 6522KTRI QuikSteel Plastic Tank Repair Kit is your go-to. 
  • For petty to heavy-duty repairs consider Seal-All 380112 Contact Adhesive and Sealant as it is an all-purpose adhesive.

The 7 Best Epoxy For Plastic Gas Tank Repair

1. J-B Weld 2110 Metal Fuel Tank Repair Kit – Best Overall Epoxy

Editor’s Rating: 4.8 out of 5.0

This quick-setting, steel-reinforced epoxy kit is fuel-resistant, waterproof, and works best for plastic and metal/aluminum gas tanks. It is widely popular in use for oil tanks, plastic tanks, water tanks, and storage. 

It is great for repairs and can mend cracks and holes of up to 4 inches in length. The kit dictates the installation instructions and is pretty easy to follow and use. JB products have quite a reputation and are excellent. 

Pros

  • Chemical resistant (mainly including Petroleum)
  • No need to remove fuel when fixing leaks.
  • Portable and handy 
  • Setting time – 5 mins, Curing time – 4 hours.
  • Super strong and long-lasting bond.
  • Fixing is an easy, quick, and simple process.

Cons

  • Quick setting time, you need to work fast.

Verdict

The kit consists of epoxy putty, an applicator, sandpaper, and fiberglass cloth. We found that the kit has fantastic adhesive properties and can withstand varying temperatures and high pressure. Fixing is super easy and removal of gas is not required when trying to stop leaks. A great option for quick fixes.


2. KBS Coatings Auto Fuel Tank Sealer Kit – Best Epoxy Kit

Editor’s Rating: 4.8 out of 5.0

This amazing auto fuel tank sealer kit is one of the best when it comes to sealing fuel tanks swiftly. It is designed to prevent and reoccurrence of rust and corrosion. 
A cleanser and degreaser, rust remover, gloves, and instructions are all included in this kit.

Weld seams and tiny pinholes are sealed very well by the coating. After the lining has completely cured, an extremely tough and resilient skin is left behind for that extra-stong bond.

Pros

  • Prevents clogged fuel filters
  • Strong and durable bond
  • Easy-to-use kit, useful instruction manual 
  • Can seal a tank of up to 25 gallons.
  • KBS Coatings has over 85 years of reputation

Cons

  • Can sometimes feel like labor-intensive work
  • Need to read and follow instructions properly

Verdict

We observed the tank sealer is adaptable and may grow and shrink along with the tank. The kit comprises of 1/2 Gallon of KBS Klean, Quart of Tank Sealer, and a Quart of RustBlast. The kit also houses detailed instructions for use, which was a plus. 


3. Blue Magic 6522KTRI QuikSteel Plastic Tank Repair Kit – Best Affordable Epoxy

Editor’s Rating: 4.8 out of 5.0

With a strength of 5950 PSI, this is one of the best epoxies out there for gas tank repairs. When used, the binding resembles epoxy. 

Everything required to fix any serious leaks is included in the package. It is free of solvents, oil, petrol, diesel, coolant, water, and automotive fluids. Additionally, it is simple to create a putty-like binding with the mixture. 

Pros

  • Temperature resistance of up to 500°F/260°C and -90°F/-68°C 
  • Highly durable bond
  • The color post-curing is gray on metal, off-white on plastic
  • Easy-to-use instruction manual 
  • Can be set underwater
  • Affordable

Cons

  • Need to read and follow instructions properly to work best. 

Verdict

Proper instructions on the use and application of the product are written on the pack and are easy to follow, which was a bonus. It comes in ‎2 ounces packaging and is quite handy. It has a setting time of 5 minutes and a curing time of an hour, which makes it great for quick fixes. 


4.  J-B Weld 8217 TankWeld Gas Tank Repair – Best Epoxy For Repairs

Editor’s Rating: 4.8 out of 5.0

This amazing combination of epoxy putty bonds is truly a game changer. Epoxy bonds amazingly well on plastic or metal and is surprisingly very strong and durable. JB products all do well and are made with high-quality ingredients and combinations to provide great results. 

It is petroleum, ethanol, hydraulic fluids, and many other major chemical resistant and has a strength of over 4000 PSI. Once cured, the bond surface can be worked on aesthetically to suit your needs. 

Numerous metals like bronze, copper, stainless steel, aluminum, brass, and iron are compatible with this epoxy for repairs and maintenance but also work great on plastic tanks as well. A great product for bonding numerous surfaces. 

Pros

  • NSF certified
  • Water-resistant
  • A heavy-duty epoxy
  • Setting time 5 minutes, Curing time 1 hour 
  • Steel-inforced, industrial polymer compound
  • Hand-mixable epoxy 
  • Non-rusting composition

Cons

  • Not very temperature resistant

Verdict

We liked the quick setting time and high tensile strength it was a great option for those quick petty fixes. With a setting time of 5 minutes, it gets the job done quickly. 


5.  Seal-All 380112 Contact Adhesive and Sealant – Best Epoxy For Heavy-duty Repairs

Editor’s Rating: 4.7 out of 5.0

This all-purpose adhesive is a great option when you want to make some quick fixes or repair hairline cracks on your gas tank or other surfaces. The glue sets in a couple of minutes and is not affected by fuel/gasoline, alcohol, oil, liquids, and many other solvents. 

Its fast-drying formula sets quickly and needs very little to no curing time. It dries clear and does not leave any residue. It is made with the highest quality and durability composition that can bond any surface and tackle any repair job. 

Pros

  • Good quality glue and sealant
  • Dries clear 
  • Water-resistant 
  • Can be painted over for UV-resistance
  • Great for garage or automotive repairs and fixes

Cons

  • Sets quickly in about 2-3 minutes so you need to act fast.

Verdict

We liked the quick setting time and that it was a great option for those heavy-duty repairs. It was also compatible with multiple surfaces making it a must-have epoxy option. 


6. Versachem 90180 Heavy-Duty Fuel Tank Repair Kit – Best Quick-Fix Epoxy

Editor’s Rating: 4.7 out of 5.0

This heavy-duty epoxy fuel tank repair kit can help get the job done in less than 20 minutes. The bond is quick and sturdy and is gasoline/fuel as well as chemical solvent resistant. 

It has a tensile strength of about 1500 PSI and a curing time of about an hour. It can withstand temperatures of range 40˚F to 200˚F. Pinholes, hairline cracks, and rust spots or defects up to 1/2″ in diameter can all be fixed with this sealant. 

A small amount of heat may be generated during the curing process. Overall a very useful product to keep handy to fix those ugly leaks. 

Pros

  • Water Resistant
  • Gasoline/Kerosene/Diesel resistant
  • Job done in under 20 minutes
  • Stong bond post curing
  • Great for petty pinhole repairs
  • No welding required

Cons

  • May need to keep the setup ready before mixing the hardener and epoxy together. It can set quickly once mixed.

Verdict

With a promise of a job done in less than 20 minutes, this epoxy is a great option when you are on a time crunch. We found that this was the best quick-fix epoxy out there.


7. POR-15 Fuel Tank Sealer – Best Epoxy For Automotive Restoration

Editor’s Rating: 4.7 out of 5.0

This heavy-duty sealant is designed primarily to establish a permanent seal with improved strength and resistance to all fuels. It is also known to prevent rust and corrosion for longer durations. 

This was one of the best plastic gas tank sealants we found and has superior strength and fuel resistance. It is one of the best options for automotive restoration out there. 

Pros

  • Long-lasting results
  • Corrosion and rust control
  • Works well on any type of fuel tank. 
  • Superior strength 
  • Heavy-duty bond created

Cons

  • May need to keep a safety kit on hand just in case.
  • May contain hazardous substances
  • May need to empty the tank before sealing.

Verdict

When you want the best option for your automotive restoration, then this product is the best choice. With numerous uses and features, it is the best bet for a job well done. 


Is Epoxy The Right Solution For A Plastic Gas Tank Repair?

A good-quality epoxy is definitely a great choice to repair a leaking plastic gas tank. Any tear, crack, leak, or puncture in a plastic gas tank can be fixed with its assistance. The epoxy you choose should have qualities like durability, gasoline-resistant, and waterproof. 

Epoxy is excellent for plastic and helps with quick sealing and the epoxy plastic gas tank repair putty is versatile, durable, and works best on multiple materials such as metal. 

The epoxy will be ideal for your leaky gas tank because it can resist up to 300 degrees and 900 PSI of pressure once it has set. This is the quickest approach to prevent wasting any of that pricey fuel during a leak and keep it in the tank.

When gas tanks were constructed of metal, they were simple to repair at home with the right equipment and effort. Plastic gas tanks are now prevalent, and replacing them takes specialized materials that aren’t as easily accessible.

Factors To Select The Best Epoxy For Plastic Gas Tank Repair

  1. Bond Strength
  2. Durability
  3. The need to remove the fuel before sealing the tank
  4. If the sealant is fuel resistant or not 
  5. Setting and curing time 
  6. Provision of the instruction manual
  7. Long-lasting results and need for touch-ups 
  8. Size of repair (Pinhole or fracture to Big holes/dents)
  9. Viscosity 
  10. Affordability 

FAQs – The Best Epoxy For Plastic Gas Tank Repair

Which glue can be applied to a plastic gas tank for repairs?

The simplest method for sealing a plastic gasoline tank is with epoxy glue, which is pretty long-lasting too, and doesn’t fade quickly.

For what time frame does plastic epoxy last?

When resin and hardener are correctly maintained at room temperature in sealed containers to prevent contamination, epoxy shelf life can continue for many years.

What happens if the mixed epoxy is dense?

The application can produce too much heat if your epoxy pour is too thick, which can lead to inaccurate curing of the surfaces and the occurrence of cracks/bubbles. After the preceding pour has completed its heat cycle, which typically takes 24 hours, you can pour the subsequent layer.

How can you tell if the epoxy is completely cured?

You shouldn’t be able to dent the final stage of epoxy curing with your thumbnail which is the stage of Epoxy’s final cure. Clamps can be removed if any, at this stage in the chemical properties of epoxy, the material has attained roughly 90% of its maximum strength. At room temperature, it will continue to cure over the following few days.

How is the plastic surface prepared for epoxy application?

Epoxy bonding surfaces need to be cleaned, dried, and sanded for effective adhesion. Surfaces used for epoxy bonding must be devoid of any impurities, including paraffin, gasoline, and mold release. Utilize lacquer thinner, ethanol, or another suitable solvent to clean the contaminated surfaces.

Does the gas tank need to be emptied while making repairs?

For minor leaks and fractures, the gas tank does not need to be emptied to make repairs. A few options of epoxy sealants specify on the packaging if the gas tank needs to be emptied. Oftentimes, the sealant does work even if fuel is present in the tank. 

Does fuel/gasoline react with epoxy?

When you use epoxy that is fuel-resistant, it does not react with the epoxy and forms a strong bond, and provides efficient repairs for example when you use the 2-part liquid epoxy. If the epoxy is not chemical resistant then may leak through before the epoxy fully hardens/cures.

Are there any dangers of using epoxy?

One needs to be careful when using or working with epoxy as too much exposure may lead to skin and eye irritation. Prolonged exposure may also lead to skin allergies and asthma.

Where can epoxy not be applied?

Epoxy does not work well on non-porous surfaces, as when wet, it does not bond well and may lead to a slippery surface. It is better to avoid using epoxy on greasy or wet surfaces.

Can the epoxy bond be stronger than plastic? Is it flammable?

The epoxy bond on plastic is actually considered stronger in nature than the joined surfaces. Yes, epoxy is flammable in nature and should be avoided in electricity/electronics applications.

Our Recommendation For Best Epoxy For Plastic Gas Tank Repair

After a lot of study, research, and using numerous sealants from the current market, we highly recommend J-B Weld 2110 Metal Fuel Tank Repair Kit as it gets the job done quickly and professionally.

The bond is strong and efficiently seals any cracks, holes, or fractures in your plastic gas tank. You will definitely not regret buying this and will make your repair job a breeze.

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