Silca's 'Ultimate Tubeless Sealant' is made from recycled carbon fibre

Two white bottles with green labesl stand in front of a tanwall gravel tyre against a black background
(Image credit: Silca)

Although not universally accepted (yet), the benefits of tubeless tyres are winning over riders all the time. The Silca Ultimate Tubeless sealant hopes to mix it with the best tubeless sealant on the market with a novel mix of materials and a system by which you can prolong the life of the sealant by a refreshing top up of latex and solvent intermittently.

Tubeless sealant typically comprises a natural or synthetic latex, a solvent to keep it from drying out and more often than not some form of small particulates to help clog holes. As with so many things in life there are trade-offs; less solvent means more gloopy tyre goo but it’ll dry out more quickly. Less solvent gives you a sealant that’ll last longer, especially in arid conditions, but at the risk of not sealing holes so well. 

Will Jones
Senior Tech Writer

Will joined the Cyclingnews team as a reviews writer in 2022, having previously written for Cyclist, BikeRadar and Advntr. He’s tried his hand at most cycling disciplines, from the standard mix of road, gravel, and mountain bike, to the more unusual like bike polo and tracklocross. He’s made his own bike frames, covered tech news from the biggest races on the planet, and published countless premium galleries thanks to his excellent photographic eye. Also, given he doesn’t ever ride indoors he’s become a real expert on foul-weather riding gear. His collection of bikes is a real smorgasbord, with everything from vintage-style steel tourers through to superlight flat bar hill climb machines.