Hercules, quart, 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
-Makes a strong, lasting repair on difficult leaks in steam boilers
-Prevents steam boiler surging
-Will not clog or coat submerged hot water heating coils, controls, vents or valves