Forms a permanent bond with aluminium, brass, copper, steel, PVC, fibreglass, plastics, glass, wood, and more. Permanent Coolant Leak Repair with K-Seal. K-Seal couldn’t be simpler to use. Just shake the bottle, add the fluid to your coolant system, and run your engine as normal.K-Seal’s unique formula will seek out holes and cracks, and permanently seal them, with no adverse impact on the efficiency of your engine cooling.
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