Epoxy Gas (Fuel) Tank Sealer 4 PACK

Epoxy Gas (Fuel) Tank Sealer

PHENOL NOVOLAC EPOXY GAS TANK SEALER  Each Kit Up To 10 US Gallons, 37 Litres.


Each Kit is a total volume of the 2 parts of about 700mL, and it will cover approximately 2.3 square meters.

Permanently Repairs Steel, Aluminum, Fiberglass and Plastic Gas Tanks


Phenol Novolac Epoxies are a new breed of chemical resistant materials, able to withstand permanent immersion of many harsh solvents, fuels and oils. This Epoxy has much better bond strength than single component products, with strengths of up to 3000 PSI, and this higher strength reduces the need for a clinically clean surface, as the epoxy actually prefers to bond to a rough rusty surface. Our new phenol novolac is more thixotropic, which means it 'hangs' on the tank walls during the coating process. This gives a thicker overall coating. There is more volume of material in the kit to allow for this.

What else can you use Gas Tank Sealer for?

A corrosion and chemical resistant coating. ie: battery compartments.
A high strength adhesive where plenty of working time is needed.
A potting compound, to encapsulate electronics
A non-skid surface, just bed in aluminum oxide.
Relining old potato peeler machines (Hobart type) - coat liner and bed in aluminum oxide.
Repair leaks in concrete vessels, Add fine sand to make a mortar.
Bonds to almost anything except polyethylene. Bonds to Wood, plastic, rubber, concrete, metals.
Making high quality molds - virtually no shrinkage on curing.
Thin cross section repair of sheared parts, such as; broken cups, dishes, or a split leg on a chair.



Application Instructions

This applies to both metal and fiberglass tanks.



See below for current MSDS


  1. All traces of oil and gasoline should first be removed by going to Step 2 for plastic tanks or Step 3 for metal tanks. If you should decide to use acetone when doing a fiberglass or plastic tank use extreme caution. Do not allow solvents to stay in the tank over 10 minutes. Dispose of the contaminated solution. Allow to dry.
  2. For Plastic or Fiberglass tanks: wash the tank with Dish Washing Soap, Hot Water and the drywall screws. These will rough up the surface. Rinse with Hot water and allow to thoroughly dry then go to step 5.
  3. For Steel tanks place a hand full of drywall screws with about a pint of acetone or lacquer thinner into the tank and shake them around vigorously for several minutes. These will dislodge any loose particles of rust, and in the case of plastic/fiberglass, rough up the surface. Dispose of the contaminated solution. Allow to dry.
  4. ADDITIONAL STEP FOR ALUMINUM TANKS: Add two tablespoons of LYE (Drano, Caustic Soda) to four litres of water. ADD LYE TO WATER, NOT WATER TO LYE. WEAR PROTECTIVE GEAR. Slosh the solution around in the tank for 30 seconds. Pour solution out and dispose. Rinse with water and pour off. Add 250mL of vinegar into a litre of water and slosh around in tank for 30 seconds. This neutralizes the lye. Pour off and rinse with water. Allow to dry.
  5. Apply duct tape or masking tape to any weeping seams, holes or porous areas.  This will stop any Gas Tank Sealer from oozing out, and will allow it to bridge over the hole. Plug the outlet ports with putty or Play-Doh.
  6. If the tank has a good paint job, protect it from resin spillage by wrapping in a layer of GLADWRAP, then a layer of ALUMINUM FOIL, then another layer of GLADWRAP.




Mixing ratio is 2 parts of A to 1 part B. Gas Tank Sealer resins should be at room temperature. Store your resin and gas tank at room temperature for 12-24 hours before mixing, so that it is at the correct temperature. Resin colder than 21oC will make resin thick and not flow well, hotter than 30oC will make it runny, so it doesn’t stick to the sides well and it will cure too quickly. The tank and the resin should be at the same temperature. If the tank is hotter than the resin, it will cure the resin faster, reducing your working life and coverage. Resins stored in a garage that is 32°C, used at that temperature, would HALF the working time or worse. At 21°C, the material will have gelled in 30 minutes, so it is important to have wetted the tank walls with the sealer within 10-15 minutes of mixing.

Mix the sealer thoroughly in a suitable container. A clean ice cream container is ideal. Continue to so that the epoxy is completed mixed (approx. 2 minutes) (Coverage will depend entirely on the total surface area of the tank, not the volume) 

There is NO relationship of volume to surface area, i.e.:                 

Tank 1: 30cm x 30cm x 30cm = 27 litres,  surface area =540cm2    

Tank 2: 30cm x 90cm x 1cm   = 27 litres,  surface area = 5640cm2

IT IS NOT RECOMMENDED TO TRY TO USE THE KIT TO TREAT TWO SMALLER TANKS. MOST FAILURES OCCUR FROM IMPROPER MEASURING AND MIXING. You may apply a second application within 24 hours if you want to use up the resin. This is, of course, good insurance on a bad tank, or one with many baffles etc.

Apply the sealer IMMEDIATELY after mixing completely. Waiting 5-10 mins will reduce your working time and coverage rates, as the resin will have already started to cure.

In the event that the viscosity is too thick from working in higher temperatures which is inevitable, you can add a small amount of Xylene or lacquer thinner to the mix (no more than 5% - i.e. 30mL in the motorcycle kit, 60mL in the car kit). This serves to retard the cure cycle and thin the sealer somewhat to allow easier coating coverage.


  1. Pour into the tank, then immediately seal up the filler hole with GLADWRAP and an elastic band.  Rotate the tank around in every direction for several minutes to obtain a good layer of Gas Tank Sealer over all surfaces. Remove the filler cap, GLADWRAP seal, and pour out any excess.  Allow to drain upside down for a few minutes.
  2. If you have a built in fuel filter, blow air into the fuel line port for about 10 minutes.  This will clear the filter of any Gas Tank Sealer.
  3. Trim up any excess material as soon as the Gas Tank Sealer becomes plastic like.  This can be scraped out with a sharp knife at this point (usually about 40-60 Min after mixing) Place the tank in a warm 21-32 oC place and allow to cure for 24-36 hours before putting gasoline in the tank.
  4. If you want, or need to apply a second coat, you must do so while the first coat is still tacky (usually within 24 hours)
  5. If you can elevate the temperature of the tank to 60 oC for 4 hours, this will ‘post cure’ the resin and the tank may be put into immediate service.

A few weeks ago you sent me your gas tank sealer kit. In the meantime, I have tried it and I just wanted to tell you that IT'S A GREAT PRODUCT! It worked perfectly well! Now I have a perfect gas tank again for about 40 US$ (including spray paint etc.). A local repair shop wanted about 1000 bucks (no kidding!) for welding and repainting the tank . So, I guess I made a good deal. Thanks a lot for providing such a great product and also for your excellent service.

Best regards,

Aldo Hoermann
............ Comments from US Customer..........

See below for current MSDS


Price: $310.00


 This Item is a HAZMAT item.
We cannot ship this overseas or to some very remote locations in Australia. 
We cannot ship this item to a PO Box or parcel locker it must be delivered to a residential or business address. 

Because it is a Hazardous item, couriers cannot guarantee delivery times as they have to manage compatibility of all materials they carry. This does not generally affect the delivery of aerosols.




Your opinion is important to us...tell us what you think!

Review This Product

Additional Information

Product Data

  • GTS1750X4