Patch Rubber Heavy Duty Extra Thick bead sealer works to create a thin rubber seal between the tyre and wheel rim to stop minor air leaks.Useable on all types of tubeless tyres from cars and trucks to motorcycles, ATVs, and tractors.Convenient applicator brush is attached to the underside of the cap.It helps seal even on wheels that have minor corrosion, pitting, or imperfections that prevent a conventional seal.Brushable compound to seal leaks between tyre and rim. Apply a thick coat to the bead prior to mounting the tyre on the wheel.