Goodyear Tyre SealantWith over 100 years of experience working with tyres on everything from race cars to jet fighters, you can feel confident that this bottle of sealant from Goodyear will keep your bike tyres in top condition. Ideal for tubeless systems, this sealant acts quickly to seal up punctures up to 6mm in size, allowing you to keep rolling without interruption.Features: Seals punctures up to 6mm (1/4) Performs in temperatures as low as -34°C Optimised for tubeless tyre systems Shelf Life: Up to 18 months Operation Life: Up to 7 months in tyreBuy Goodyear Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.