Is Head Gasket Sealant Safe To Use?

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Is K-Seal safe to use for head gasket repairs and coolant leaks?

When you’re facing vehicle issues like a head gasket leak and want to use K-Seal, it’s natural to wonder: ‘Is K-Seal safe to use?’ or ‘Can K-Seal damage your engine?’ 

When you choose K-Seal to fix your head gasket, you are choosing a head gasket sealant that has undergone rigorous independent testing. It is a safe and effective product; one that you can use without the need for any special skills or experience.

Tested and proven safety of K-Seal to ASTM D3147 standard

K-Seal is not just any head gasket sealant—it has undergone rigorous independent testing to ensure its safety and effectiveness. Engineered to meet the ASTM D3147 coolant stop leak product standard, K-Seal was tested by the engineering division at Brighton University. It is the only coolant leak repair product to have been independently tested by a university to meet this strict standard.

Can K-Seal Damage Your Engine?

No, K-Seal will not damage your engine. A key part of ASTM D3147 testing involves ensuring that the product passes through a filter of 0.85 mm without clogging or gelling. Also as part of the testing, K-Seal sealed holes up to 0.025 inch and cracks up to 0.01 inch. This guarantees that K-Seal will not block even the narrowest passageways in your cooling system, making it safe for your engine.

K-Seal Ultimate head gasket repair

How to Use K-Seal Safely

K-Seal is also incredibly easy and safe to use, even if you have no prior mechanical or engineering experience:

  • No special tools are required
  • Unlike other products there is no need to add or remove the antifreeze
  • It’s as easy as topping up the water
  • You shake the bottle, add the entire contents to the cooling system and start the engine

Although you can add K-Seal to a hot engine, we advise you to work with a cold engine; it’s much safer. With a hot engine, the coolant will be hot and under pressure so take extra care.

Please note that if you suspect that your cooling system is already blocked or restricted, you must clean and flush the system beforehand.

K-Seal money back guarantee

We’re so confident that a single bottle of one of our K-Seal products will fix the leak in your head gasket and save you hundreds, even thousands of dollars, that in the rare event that it does not result in a permanent repair we offer a full money back guarantee.

Where to buy K-Seal

Ready to fix your head gasket issue with a product that’s proven safe for your engine? Find out where to buy K-Seal, K-Seal HD or K-Seal Ultimate, the trusted head gasket sealants that have been used successfully on millions of vehicles worldwide.

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