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Best Boiler Stop-Leak (Boiler Sealer)

Happy Thanksgiving, everyone.

I've got a boiler that needs some attention. There seems to be a small leak coming from one of the sections. But, with contractors' hectic schedules right now, we'll need to replace it in the spring or at least 2 months from now.

Can you guys, recommend the best boiler sealer?

There seems to be several products on the market:

- Hercules Boiler Stop Leak
- Gunk's Liquid Boiler Sealer
- Black Sawn's Boiler Stop Leak
- Safe's Silver King
- Hydro-Seal Boiler Stop Leak
- Utility's Boiler Weld

Which products have you, guys used and how were the results? Each of these products come in liquid or powder form. Did you find that the powder form was more effective?

By the way, this forum is a great place for people to help each other. Thanks for the help!


*Mod, if this is posted in the wrong category, please let me know and I will remove and relocate.