Stan's NoTubes Sealant is a thin, low-viscosity fluid that coats tire interiors, swiftly sealing punctures. Two ounces in a tubeless tire can mend punctures up to 1/4" to keep you riding. Stan's Tire Sealant remains liquid in tires for up to seven months. In arid conditions, monitor sealant levels more frequently, but our formula's anti-freezing agents allow use in temperatures as low as -30F. One quart can convert up to 16 tires.