MASSFX  tire sealant is a heavy duty sealant that permanently seals leaks and prevents flats from occurring; saving you both time and money. Manufactured and sold in the USA. Using Stop & Go tire sealant does not void tire warranties so use it without any risk. Use on any air-filled tire from industrial equipment to Golf Cart tires. Using this sealant also extends the life of tires and is effective for the entirety of the tire's life. One time only application process. Just pour sealant into the tire to the recommended amount and ride on without the fear of a bad time due to a flat or punctured tire. Used as both a preventative and an after the fact measure. Contains tube and valve core remover under lid. This product is the 32 oz. version.