no more flats. Slime tube sealant seeks out and instantly seals tread area punctures up to 1/8 in (3 mm). When a puncture occurs, our patented sealant is carried directly to the puncture. The pressure of the escaping air forces the particles into the opening, where they build-up and intertwine to form a long-lasting, flexible plug. Instantly, air loss is blocked and a flat tire is prevented. Install in your bicycles, dirt bikes, wheelbarrows, riding mowers and more and enjoy 2 years of continuous flat tire protection.