Tubeless Sealant is an indispensable liquid for making your tyres tubeless. Tubeless Sealant has two functions - firstly, it seals punctures in the tubeless tyre. Since a tubeless tyre has no inner tube, you cannot replace that in the event of a puncture. Instead, sealant will seal the puncture in the tyre so that you can continue riding. Secondly, sealant provides an extra coating on the inside of the tyre to prevent air loss. Thus, with sealant you can get the tubeless tyre airtight on your rim.