Using K-Seal

How Does K-Seal Work?

K-Seal is a specially-developed, scientifically tested formula containing ceramic microfibers and copper particles. When added to an engine’s cooling system K-Seal will flow harmlessly through, suspended in the coolant. However, if a leak is present, K-Seal will quickly coagulate around the damaged area and repair the crack permanently.

With over 6 million bottles sold worldwide, K-Seal is the only coolant leak and head gasket repair liquid to be scientifically tested and compliant with the ASTM D3147 standard. Testing by Brighton University showed K-Seal is capable of permanently sealing holes of up to 0.635mm in diameter, and cracks up to 0.254mm wide by 12.7mm long. As most holes and cracks are significantly smaller than this, K-Seal can provide a permanent, guaranteed fix for the majority of leaks.