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About this product hercules boiler liquid seals and repairs cracks and leaks in steam and hot water systems Very similar to products you can purchase for your car, the seal works by mixing with the water in the boiler and creates a gummy seal in any cracks or small holes. 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. It creates a chemical seal that is tough, expands with heat and resists pressure Hercules® boiler liquid seals and repairs cracks and leaks in steam and hot water systems

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. Leak sealer f4 is a internal leak sealer developed for use throughout a central heating system to seal small, inaccessible leaks and weeps which may cause pressure loss and boiler breakdown Once dispersed within the system, the product finds the area of oxygen ingress and forms a polymer to seal the pinhole Is your boiler leaking water

Liquid boiler sealer for all steam systems How does boiler leak sealer work A leak sealer adheres to a crack or joint in a boiler to keep steam and heat from escaping This product works on high and low pressure heating systems and withstands high temperatures, high pressure, expansion, contraction and vibration.

A leak or crack in your boiler can be fixed with a simple sealer solution

These boiler sealers are designed to be used in steam or hot water boilers

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