Protect’Air Max is a PH neutral latex based sealant that can be used for Road Tubeless and MTB tyres. It has two functions.When used with Tubeless tyres, it seals the casing. On MTB or Road tyres. Secondly, it acts to repair small (1-2mm) punctures that perforate the casing of the tyre. If there is a puncture, the sealant acts to fill the hole and repair the tyre. Note: It may not repair larger punctures.The sealing fluid is used instead of regularly-used road inner tubes and prevents punctures. The liquid is lighter than inner tubes.