Toro Premium Tire Sealant is installed quickly and easily through the valve stem. When the vehicle is driven, the fluid action of the solution causes the entire interior surface of the tire to be coated. The adhesion properties keep the solution in place at all times, ready to seal any source of air loss. The tire is now protected from any puncture or other leak for the remaining life of the tire. Toro Premium Tire Sealant in the tire also helps to dissipate the heat caused by road friction, allowing the tire to run much cooler.When a puncture occurs, the centrifugal force of the rotating tire and internal pressure forces the tire sealant into the hole. This forms a temporary seal, and as the tire continues to turn, the flexing action causes more material to go into the puncture. A permanent seal is caused as the puncture is packed with fibers and other solids.