Puncture prevention sealant Z-Sealant was designed for preventing punctures. For use with an inner-tube it needs to be injected into the valve using the nozzle provided or into the side of the tyre for a tubeless system, helping to prevent punctures up to 3mm. The latex-based-formulation remains efficient for a minimum of 6 months. In case of hot weather, it is recommended to use Z-Sealant more regularly. The Z-Sealant formula contains less than 1% ammonia and won't damage your tyres. Shake before use. It won't freeze. Capacity : 1 ltr or 125ml (min 50ml per tyre)