Initially, we used an adhesive sealer called "Through the Roof". It failed. Then, we used the Loctite Marine adhesive sealer. It failed. This morning, while slopping tar on the plug and everybody growling at each other, I called the company for
They told me guys are using Ram-Nek tape to seal these plugs, then putting 2" deck screws through the plug into the tire bead to hold the plug in place.
There are three kinds of men. The one that learns by reading. The few who learn by observation. The rest of them have to pee on the electric fence for themselves. Will Rogers
These plugs have been my 'electric fence' moment!