Cast Iron Furnace Pinhole Leak

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  • This topic has 2 replies, 3 voices, and was last updated 20 years ago by Guest.
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    • #275287
      MasterPlumbers
      Keymaster

      I have a Cast Iron Wood and Coal Hot Water Furnace(Buderus German made about 20 years old) that has developed a tiny pinhole water leak. It is located about 1/4 inch away from the lip that seals the upper door. The furnace seems in good shape otherwise.

      Can it be fixed. Any suggestions would be appreciated.

      Thanks

      Tim Conway

    • #291630
      kerryedwards1
      Participant

      I repaired my cracked cast iron radiators for a hot water heating system with epoxy putty ten years ago. They are still holding up. I would certainly give that a try if no one else comes up with a better idea. JB Weld, available in auto parts stores, is designed to be used on engine blocks which get very hot. I have heard of people successfully using it to repair cracked engine blocks.

    • #291631
      Guest
      Participant

      Thanks Kerry
      Its down to the 40s today and I intend to try to fix this quickly. I’ll let you know

      Tim

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