- Drain the tank below the level of the leak.
- Drill the leaking hole to make it smooth and regular. Use a drill bit at least 3/8-inch in diameter.
- Insert a boiler repair plug into the hole. ...
- Tighten the nut on the boiler repair plug until the rubber washer is tightly seated, sealing the leak.
How do you fix a hole in a plastic tank?
https://www.youtube.com/watch?v=RuaDvdvYFVY
Can you patch a plastic water tank?
Thankfully, there are several methods created to repair minimal damage in plastic (poly) tanks. ... Some of these welds require a heat source to “patch” damaged areas in plastic tanks while others are able to be molded in with a chemical reaction between two materials.Sep 12, 2018