Tufo sealantt for repair of flats of all TUFO tires. It can be used after getting a flat and also as a preventative measure when applied to the inside of the tire before use. When a flat occurs the sealant seals the puncture so the rider does not even detect getting a flat. It increases safety considerably, since fast loss of air does not occur and, consequently, rider‘s stability is not affected. Application through the valve stem.