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. 

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Will Jones
Tech Writer

Will joined the Cyclingnews team as a reviews writer in 2022, having previously written for Cyclist, BikeRadar and Advntr. There are very few types of cycling he's not dabbled in, and he has a particular affection for older bikes and long lasting components. Road riding was his first love, before graduating to racing CX in Yorkshire. He's been touring on a vintage tandem all the way through to fixed gear gravel riding and MTB too. When he's not out riding one of his many bikes he can usually be found in the garage tinkering with another of them, or getting obsessive about tyres. Also, as he doesn't use Zwift, he's our go-to guy for bad weather testing... bless him.

Rides: Custom Zetland Audax, Bowman Palace:R, Peugeot Grand Tourisme Tandem, Falcon Explorer Tracklocross, Fairlight Secan & Strael