SILCA Ultimate Tubeless Sealant uses the power of a foaming latex formula combined with chopped carbon fibers to boost sealing power even at higher pressures. Ultimate Tubeless Sealant contains 5% by volume, 6, 9, and 12mm chopped carbon fibers which have been reclaimed from recycled bicycles, carbon wheels, race cars, and aircraft components.
A unique foaming latex formula allows for the very lightweight carbon fibers to be evenly dispersed within the sealant while riding, which allows for a higher fiber content than possible with Kevlar or fiberglass.
Bundles of recycled carbon fiber are carried directly to the puncture by the sealant flow where thousands of micro-bubbles collapse on each other, depositing their high stiffness carbon fibers over the puncture forming a seal. During this process, the carbon fibers form a dam of fibers against the tire casing not unlike a beaver dam of sticks blocking the flow of a stream. This dam of high stiffness/high strength fibers has been shown to seal holes in testing up to 7.5mm, some 25% larger than conventional sealant technologies.
One thing to note is that Silca's Ultimate Sealant must be poured into the tire during tire install. Because of the high carbon fiber content, Ultimate Tubeless Sealant will plug any syringe or valve hole you try to pump it through.
B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.
Mfg PartNum: AM-AC-039-ASY-0101 | |
Works very well, I'm actually shocked how well it works. I've also used just the replenisher as the primary sealant and it also works, but it was a small poke, nothing serious.
The first step version has carbon braids in it, you can't inject it. So you have to break the bead of the tire, pour it in, get the bead back on, etc. It's invariably a mess with a road bike tire. It looks nice and easy on a video when someone uses a MTB tire, it's not that way for a road tire. It's SUPER sticky too, so rub it hard with a towel or wash it right away.
The replenisher you CAN inject, but it will gum up the valve. I put a drop of chain lube (oil based) in the valve after then of course pump the tire right up, and it seems to help with that.
I really wish it wasn't so messy to install. I ideally want them to sell just the fiber strands, so we can pour them into the tire, seat it, then inject sealant. I really hate disturbing the tape of a rim, that's my main issue. The mess I can handle outside, but still, I want it cleaner.
But, even with all of this, it works. I've gotten cuts in my GP5000's and while it spews all over your bike, it will seal anything normal road debris ish. I don't cheat my road bike onto gravel and then complain about it, just road bike stuff.
Worth it, works better than normal stuff with glitter or black pepper sprinkled in for sure.
