QT Boiler Liquid

Hercules, QT, Boiler Liquid, Seals & Repairs Cracks & Leaks In Steam & Hot Water Systems, Liquid Formula Will Not Clog Hot Water Coils, Controls, Valves, Or Vents, Forms A Tough Seal That Expands & Contracts With Heat, No Odors, No Priming, No Foaming, Does Not Contain Petroleum Distillates.