Is JB Weld Diesel Fuel Resistant?

J-B Weld is absolutely impervious to water, gasoline, and just about any other petroleum product or automotive chemical once fully cured. Try our SteelStik or WaterWeld for wet-surface or submerged water or gasoline repairs. When you require a quick-setting epoxy, KwikWeld is a perfect alternative to traditional J-B Weld.

Will JB weld work on a diesel tank?

We previously used JB weld on an aluminum diesel tank and it worked, sort of. It would have worked, but our fuel pump, meter, filter, and hose were simply too heavy, and the JB weld kept splitting. I’d clean and ruff the surface before trying it.

Can JB weld be used on fuel tanks?

For a wet repair, you’ll need JB Weld Autoweld or SteelStik epoxy putty sticks. The epoxy, once cured, can withstand temperatures of up to 300 degrees Fahrenheit and pressures of up to 900 pounds per square inch, making it ideal for a leaking gas tank. This is the quickest way to keep that costly petrol in the tank rather than on the road.

What epoxy is fuel resistant?

The Loctite Epoxy Weld Bonding Compound is a two-part epoxy resin and hardener combination. When resin and hardener are mixed in equal amounts, they react immediately to form a robust, inflexible, high-strength connection. As an alternative to welding, Loctite Epoxy Weld can be utilized. It can be used to repair, fill, and rebuild all metal and common surfaces as an adhesive. When fully dried, it cures to a metallic gray finish and can be sanded, drilled, machined, or painted. Most shop fluids, including as water, diesel fuel, gasoline, antifreeze, hydraulic fluid, engine oil, and transmission fluids, are resistant to Loctite Epoxy Weld. Loctite Epoxy Weld Bonding Compound is meant to bond metals such as iron, steel, aluminum, brass, bronze, copper, and pewter together. It’s also possible to bond to wood. Machines, appliances, tools, lawnmowers, automobile components, pipelines, and imbedding bolts and screws into metal are all examples of applications.

Is J-B Weld stronger than welding?

The “Original Cold Weld,” as J-B Weld is called, was created as an alternative to typical torch welding. It’s made to be incredibly effective in even the most difficult conditions. It uses reactive chemistry to make the strongest bond possible because it’s a two-component (or 2k) epoxy system.

Is J-B Weld permanent?

The Original Cold Weld two-part epoxy technique, J-B WeldTM, provides robust, long-lasting repairs to metal and a variety of surfaces. It makes a permanent bond when mixed 1:1 and can be molded, tapped, filed, sanded, and drilled after drying. J-B WeldTM sets to a dark grey tint in 4-6 hours at room temperature.

How do you fix a J-B Weld gas tank?

Step 2: Ensure that the area around the leak is clean. Sand the tank, covering a few inches surrounding the leak with the sandpaper. Take it all the way down to the bare metal. The sanding accomplishes two goals: it removes any paint, corrosion, or road grime from the gas tank repair location, and it provides a surface for the epoxy to adhere to. It is more effective than smooth metal.

Step 4: Cut a piece of SteelStik large enough to cover the repair. You don’t need to cover the entire three-inch area, but you do need enough to cover the hole and a reasonable amount of space beyond it.

Step 5: Knead SteelStik to evenly combine the two colors. It should be a dark gray color.

Step 6: Once the putty has been mixed, clean the area to be mended again, wipe it dry, and press it into the center of the hole.

Step 7: Smooth the putty flat against the tank to seal the hole. Over the hole, the putty should be smooth and flat.

Allow at least one hour for the SteelStik to solidify and cure before driving the automobile.

Is epoxy resistant to diesel fuel?

When constructing or painting an epoxy composite tank, we recommend employing a two-pot mixing procedure. When resin and hardener are pumped and combined in the same container, complete epoxy mixing is difficult to achieve. A film of resin or hardener will adhere to the container’s bottom or side, leaving unmixed or undermixed components. When coloured epoxy is put together, this is easily visible.

To ensure thorough mixing, pour resin and hardener into one container and mix thoroughly, scraping the sides and bottom as needed. Scraping is important since it combines the bulk of the individual components into the final product. Second, pour the epoxy mixture into a new, clean mixing container. To mix a second time, use a new stir stick. This transfer will remove any adhering unmixed material, and subsequent mixing will ensure that both components are thoroughly crosslinked.

Post cure at an elevated temperature

Cure for 4 to 8 hours at a minimum of 120° F. (after the epoxy has cured at room temperature and can no longer be dented with your thumbnail). To apply an increased temperature after the cure, you can use a temporary oven or a radiant heater. In an epoxy composite tank, a high-wattage incandescent or halogen light bulb can boost the temperature to the required level. This is frequently the only option for constructing an integrated epoxy composite tank. However, keep an eye on the fire threat because some light bulbs can get hot enough to burn or ignite the epoxy.

Scrub cured epoxy thoroughly with water

Scrubbing the surface with water and a scouring/abrasive pad, such as 3M’s Scotch BriteTM pad, eliminates any surface pollution, including any potential amine blush. Amine blush is a water-soluble product that may be washed away with regular water. Scrubbing agitates the surface, which aids removal. Because of its water solubility, solvents usually do not remove the amine blush. So, instead of lacquer thinner, acetone, vinegar, alcohol, and other solvents, use water. Scrub again with water and dry with paper towels after scrubbing.

Considerations for holding tanks and gray water tanks

Type III marine sanitation devices (MSDs) are controlled under Title 33, Code of Federal Regulations, Part 159 (33 CFR 159)-Marine Sanitation Devices. A Type III MSD is regarded a certified tank if it (1) is utilized primarily for the storage of sewage and gray water at ambient air pressure and temperature, and (2) prevents the discharge of treated or untreated sewage, or any waste resulting from sewage, overboard (33 CFR 159.3, 159.12a, and 159.53). Type III MSDs are not required to be labeled. The Type III MSD must also conform with 33 CFR 159.97 for Coast Guard-inspected vessels. Make sure the inside surfaces of the tank are very smooth and that any burrs or wood splinters are removed so that nothing sticks to the surfaces. This should make cleaning the epoxy composite tank much easier.

Type I and Type II MSDs are more complicated systems that are outside the scope of this article; for further information, consult the Code of Federal Regulations.

There are no federal regulations or other criteria in place for the manufacture of gray water tanks that we are aware of. If you follow the following construction requirements, you should have no trouble utilizing WEST SYSTEM epoxy.

Why we don’t recommend building an epoxy composite tank for potable water

Because of regulatory and safety concerns, we have taken a broad policy of not recommending epoxy for drinking water tanks. The disadvantages outweigh the advantages. To far, none of Gougeon Brothers’ epoxies have received FDA approval or any other type of drinking water certification. Extractives seeping into the water is a serious long-term concern with any plastic water tank. As previously stated, extractives can be released by off-ratio, poorly cured epoxy. The efficient use of epoxy in the manufacture of water tanks and food handling equipment necessitates thorough mixing and a suitable elevated temperature post-cure to provide maximum cross-linking and cure of the polymer. With a home-built tank, these process controls are not always possible. Unfortunately, neither Gougeon Brothers, Inc. nor any certification organization can validate the quality control used in the tank’s construction.

What about the builder who considers the hazards and decides to proceed despite our advice? It is a personal choice for the homebuilder. Follow the general criteria outlined above when building an epoxy composite tank for potable water; in addition, you may wish to include an in-line filter to help remove any possible extracts and off flavors. Professional builders should be aware that Gougeon Brother’s epoxy compounds have no formal approvals (granted or pending) for use in potable water tanks. When certification is required, it is usually for a specific purpose. The testing is specific for end-use conditions, container sizes, and frequency of use, according to the 2000 Title 21 of the Code of Federal Regulations, Part 175.300 (Food and Drug Administration, HHS). If you have a certain design or use in mind, you should contact the American or Canadian agency to find out what they require. As with many things, the attention to detail utilized in the tank’s construction is crucial to its overall quality.

The ABYC also has a section dedicated to general potable water system installation; the specific standard is H-23-Installation of Potable Water Systems for Use on Boats.

NSF International, The Public Health and Safety Company, is another excellent source of information about potable water coatings. They are committed to certifying and testing various coatings and materials for public health and safety. To identify current products that fulfill their varied standards, go to their website.

Considerations for fuel tanks

The construction of fuel tanks is a contentious topic. Fuel systems are governed by many USCG laws and ABYC norms. Gasoline systems are more regulated than diesel fuel systems due to the lower flash point, increased volatility, and combustibility of gasoline. The fill systems, vents, installation, testing, and labeling are all subject to these standards, which are highly detailed.

The USCG’s regulation information is available at USCG Headquarters and the Boating Safety Divisions of each Coast Guard District. Parts 183.501 through 183.590 of Title 33 of the Code of Federal Standards contain the guiding regulations for fuel tanks in recreational watercraft. The regulations are available for free online or for a small fee from the Government Printing Office. Standard H-24-Gasoline Fuel Systems and H-25-Portable Gasoline Fuel Systems are the ABYC standards for gasoline systems.

ABYC publishes a written standard, Standard H-33-Diesel Fuel Systems, despite the fact that the USCG does not have any rules for recreational boat diesel fuel systems. Customers should request a copy to guarantee that all safety precautions and best practices are followed.

WEST SYSTEM Brand epoxy has been utilized to successfully create all types and varieties of tanks, which have been used in the field with excellent results. However, due to the aforementioned difficulties, Gougeon Brothers does not condone or promote the construction of particular tanks. Various epoxy combinations have shown to be resistant to a variety of liquids in our testing, including gasoline, diesel fuel, motor oil, potable water, sea water, sewage, gray water, and so on. When it comes to gasoline, some epoxy mixtures are more resistant than others. We don’t know how the epoxy will stand up to alcohol and other high-tech additions in the future. We know that several types of alcohol attack epoxy, so we can only assume that gasoline containing a larger percentage of alcohol will break down an epoxy coating over time.

Does JB Weld resist gasoline?

Is J-B Weld water and/or gasoline resistant? J-B Weld is absolutely impervious to water, gasoline, and just about any other petroleum product or automotive chemical once fully cured. Try our SteelStik or WaterWeld for wet-surface or submerged water or gasoline repairs.