Tubeless bike tire sealant is designed to seal punctures by reacting with air and forming rubber almost instantly. Over time the remaining sealant inside the tire also dries and cures into thick latex sheets or heavy clumps. This buildup is normal and common on mountain bikes that have been run tubeless for months without a full cleanout. When enough rubber accumulates it can cause sloshing imbalance or reduce how well fresh sealant circulates. In some videos riders use a low speed drill to grab

How Tubeless Tyres Work | Tubeless Tyre Demo | Tubeless Tyre Explained how tubeless tyres work | MythiQscience