Hercules® Boiler Solder makes strong lasting repairs on leaks in steam boilers caused by leaking joints or sand holes during installation, or on older installations where corrosion, vibration, settling, causes leaks and cracks.Easy-to-use, non-metallic powder finds the trouble spots and forms a tough seal which expands and contracts with heat, resists high pressure, and temperature. Behold the power of Hercules®, products built to last and trusted by plumbers to withstand even the toughest conditions.

• For use on all hydronic systems including those with rubber or plastic components
• Free-flowing powder makes lasting repairs on difficult leaks in steam boilers
• Remains in the boiler water of steam systems and will not seal leaks in the radiator circuit
• Odorless, petroleum-free formula
• Will not clog
• Will not interfere with normal boiler operation
• For warranty product details, refer to the Oatey limited Warranty document