This sealant is formulated and tested for use in all pneumatic tires. Slime will remain a liquid and not harden or dry out. Centrifugal force pushes the sealant to the tread area creating a layer of protection to repair punctures as they occur. Slime is not intended for use in tires losing pressure from sidewall punctures, bead leaks, damaged rims or faulty valves. It is recommended as a repair only in high speedover-the-road tires.