Hercules® Boiler Liquid seals and repairs cracks and leaks in steam and hot water systems. Prevents steam boiler surging and will not clog or coat submerged hot water
heating coils, controls, vents or valves. Behold the power of Hercules®, products built to last and trusted by plumbers to withstand even the toughest conditions.

• Makes a strong, lasting repair on difficult leaks in steam boilers
• Prevents steam boiler surging
• Larger 1 gal size
• Will not clog or coat submerged hot water heating coils, controls, vents or valves
• Resists high pressure and is not affected by boiler cleaners
• Will not cause priming or foaming
• Contains no petroleum distillates and is safe to use in boilers and systems with plastic or rubber components
• For warranty product details, refer to the Oatey limited Warranty document