Tire sealant is a liquid product designed to prevent and repair punctures in tires. It works by coating the inside of the tire, sealing small holes as they occur. When a puncture happens, the sealant is forced out, quickly filling the gap and creating an airtight seal. This helps maintain tire pressure and prolongs the life of the tire. Many drivers use tire sealant as a preventive measure, especially for bicycles, motorcycles, and cars. It can be particularly useful for off-road vehicles that are more prone to punctures. However, it is not a permanent solution and should be replaced or repaired when necessary.