This is how I seal a tubeless tire that lost the seal. Do not try this unless you know for sure what you are doing, I learned this back on the farm years ago and take no responsibility for anything you do. I keep a large wet towel and fire extinguisher handy and wear safety glasses when I do this and use a very small amount of WD-40.
![](https://s2.save4k.ru/pic/16egWpgQdJg/maxresdefault.jpg)