The Silca Ultimate Tubeless Sealant is a unique and powerful sealant that can keep your tires performing, even at high pressures. This sealant is made with 5 percent carbon fiber from recycled bicycles, wheels, race cars, and aircrafts. Its unique foaming latex formula allows the sealant to evenly disperse these carbon fibers while riding. This creates a higher fiber content than is possible with materials like Kevlar or fiberglass. The carbon fiber accumulates around the puncture and is deposited over the hole. This creates a dam-like structure of fiber which has been proven to seal holes up to 7.5mm wide. The race-specific formula of the Silca Ultimate Tubeless Sealant is 400 percent stiffer than other blends and lasts much longer. Simply pour the sealant into your tire upon installing and let it do the rest. The Silca Ultimate Tubeless Sealant begins sealing your tire as soon as a puncture occurs.