Permanent Repair Guarantee

K-Seal’s unique formula is the only coolant leak and head gasket repair fluid to be scientifically tested and compliant with the ASTM D3147 standard. We are so confident K-Seal will provide a fast and permanent repair that we will provide another bottle free of charge if a leak previously sealed with K-Seal returns.

Note that K-Seal cannot fix some larger holes and cracks, and we can only offer a replacement bottle where a previous application of K-Seal has fixed a leak but subsequently failed.

How to Claim

If you wish to make a claim under the K-Seal Guarantee please call, write to us, or send us a message including:

  • Your name and address
  • Proof of purchase from a registered K-Seal stockist
  • The batch number printed on the neck of the bottle
  • Vehicle details
  • A brief explanation of the problem you were trying to solve
  • A description of what happened after you applied K-Seal

Terms & Conditions

We can only offer one replacement bottle of K-Seal per vehicle. If your claim is accepted please allow 3 to 5 working days for delivery.

Expert Advice

Head Gasket Failure? Cracked Head or Block?
Leaking Radiator?

Expert Advice

Where to buy K-Seal

Have any of these symptoms? K-Seal could save you thousands on a workshop repair. Search for a stockist today!

Where to buy