Ethanol Proof Fuel Tank Sealer For Cars up to 80 Litres

(1 review) Write a Review
Shipping Weight:
4.00 KGS
Calculated at Checkout
{* *}
Ethanol Proof Fuel Tank Sealer For Cars up to 80 Litres


Works on Metal/Fibreglass/Plastic and Carbon Fibre Tanks 

Coats tanks that hold up to 80 Litres of Fuel

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 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.

To prepare the metal tank, simply place several nuts & bolts, or a piece of old bike chain inside and about 500ml of lacquer thinner, please do not use any other type of thinners . Shake the tank around to dislodge any loose particles, then drain off the liquid and allow to dry. This procedure removes any oils left over from the fuel. 

Block off any weeping seams or holes by placing duct tape over them, and fill any ports with putty, then mix up the Epoxy Gas Tank Sealer and pour into the tank. Slowly rotate the tank in every direction for several minutes, then pour out any excess resin.  Due to the Ethanol content allow to harden for 7 days before putting into use.  If doing two small tanks, ACCURATELY measure out half of each container and mix together.


Sometimes fuel tanks have been previously fitted with a seal, that is no longer ethanol proof, and has started to break down, this will need to be removed before you can reseal, its should be easy to detect if a seal had been previously fitted, below are some images of what it may look like.


 We do sell a product that will remove failed POR 15, Kreem and other seals, you will need 1 litre per 30 Litres of Fuel that the tank holds, there is no need to fill full, as the vapour is what removes the old seal, this product can only be used in metal tanks not plastic or fibreglass, please click here, to go to Fuel Tank Seal Remover


If your fuel tank has some rust in side, the easiest way to remove is to use our "Rusty Metal Solution", 1 Litre mixed per 9 Litres of water, and left overnight, will clear rust in prepration for applying the sealer. After removing the "Rusty Metal Solution, you should sieve the rust from the solution, and put it in a bucket, as you can use it again, please click here to go to "Rusty Metal Solution"


Please note that our shipping prices are a higher than it would cost to send a normal parcel via the post, the reason for this is because any product that contains chemicals must be sent and packed as per the "hazardous goods" regulations, and be transported by a carrier that is licensed to be able to transport. we are unable to send by regular post as it is now a criminal offence to send undeclared hazardous goods, for postage rates please click on the tab above, or the button below



Sales to European Countries outside of the UK will be charged VAT, if you are VAT registered in a European country, please send us your VAT Number, Verification of VAT numbers must now be carried out manually via the EU Commission VIES Validation website, once we have your VAT number we can then get validation and can  either credit back the VAT or issue an invoice free of VAT

We are unable to very your VAT at our checkout process, as the EU Website does not allow third party integrations from external websites

For customers in Bosnia & Herzegovina, Gibraltar, Liechstein, Norway and Switzerland, the invoice produced will be free of VAT, but there is a charge of £21.75 for import clearance

please complete our contact page form, or email us on, alternativeley you can call us on +44 1252 560515

1 Review
  • 3
    Carbon Fibre

    Posted by Kenn Warren on 22nd Aug 2016

    Tried to seal a Carbon Fibre water jacket with this as advised it would protect against anti freeze but it would not key in all places leaving spots without protection, maybe someone can offer advice in getting it to key equally on a CF surface.

Q. Will this work on Carbon Fibre A. Yes, we supply Caswell Sealers to Manufacturers who make Carbon Fibre Tanks, and use our products to seal when completed. Q. My tank is holds a 100 Litres of Fuel, do I need to buy 2 Kits, or will 1 be ok A. We would advise against using just one kit, but you can buy a motorcycle kit to make up the difference