Ultimate Tubeless

I’ve tried pretty much every tubeless sealant out there; Stan’s, Orange Seal, Muc-Off, you name it. But SILCA Ultimate Tubeless Sealant? This stuff is on another level. It’s basically liquid armor for your tires. I ride about 200 miles a week on my Specialized S-Works Venge, and I’ve yet to have a single ride-ending flat since switching to this. You can feel the difference in how fast it seals and how well it holds up over time. It’s thicker than most, which means it actually fills punctures instead of just spraying them all over your downtube like some caffeinated sprinkler system. Just a heads-up, it’s not the friendliest with injectors, but that’s only because it’s loaded with those little carbon fibers that actually make it work. Translation: it clogs cheap injectors because it’s doing its job too well. Do not waste your time or sealant trying to inject it through the valve stem, it just needs to be poured directly into the tire. If you’re serious about your rides and don’t want to pull over to patch flats every other weekend, stop experimenting and get SILCA. It’s slightly more expensive than its competitor brands, but so is losing watts to bad luck.

I absolutely love this sealant. After trying several tubeless options over the years, this has become my go-to. It seals quickly, holds up well over time, and gives me a lot more confidence heading out on longer rides - especially on roads where a puncture would otherwise ruin the day. What really stands out is how effectively it handles small punctures before you even realize they happened. The FiberFoam formulation seems to work exactly as advertised, and the sealant has developed a strong reputation among cyclists for sealing larger punctures than many competing products. It’s also easy to work with and has been reliable in my setup. Tubeless systems always involve a little maintenance, but this product makes the whole experience far less stressful. Not the cheapest sealant out there, but for me it’s absolutely worth it.

As usual, Silca has put forward a high quality product. The fibers in the sealant are very sticky (and difficult to clean up after a spill). Though I have fortunately not had a flat yet, I fully expect it to seal a puncture.

I got out my syringe that I've used before with Stan's tubeless latex with no trouble. I tried to suck the fluid into the syringe from the bottle, but the carbon fibers immediately clogged the hose. So I back flushed the fluid back into the bottle until the syringe was empty. Since I couldn't suck it in, I opened the syringe and poured the liquid into it. When I started pushing the liquid into the tube the fibers again quickly accumulated at the outlet of the syringe and clogged it. I found that by repeatedly pulling the plunger out to clear the clog and then beginning to push again, I was able to get the fluid in over the course of about 10 minutes. (this should have taken about. a minute) Boy is it a pain in the butt to put in. But it's difficult because it seems to be effectively sealing a hole that is probably 3 mm across. (huge). I have no doubt that those pain in the butt carbon fibers will make this stuff seal very very well.

made sure my rim tape was bubble free, secured my valve just finger tight, so as not to hurt my carbon rim, sealant took care of the rest! pumped up 40mm Maxxis Re-Fuse tires with a standard floor pump, no compression tools. second time I set up tubeless with Silca sealant; always works first try. Highly recommended!

At first the claims seem great. It has strips of fiber that will seal larger punctures. It pours in fine. Then your tire starts leaking air and you are wondering what is the deal. This is what happened to me. I set up DT Swiss wheels with this stuff on a factory tape job that was immaculate. About four weeks later the spokes were leaking air. At first I just thought it was the tape job. When I popped the tire off it was terrible. All the sealant was a solid mass and left behind a ton of residue that I had to use alcohol to get off the rim. It took tons of alcohol and elbow grease. The tires are trash since I cannot get the seal needed for tubeless anymore even though I cleaned them with alcohol also. I have to run tubes now. TL:DR - If you want to change the sealant after a few weeks and love to clean up hunky messes, this is the sealant for you. This stuff is the worst.

The positives: this sealant works amazing at stopping punctures which is what it is designed to do. And the price is fair. The negative: I worked at a local bike shop and have had the opportunity to work with various products. During a tubeless setup this stuff is easy to put in the tire before you set the bead. But in the heat it dries quicker than others. In addition, if you are just refreshing the sealant, which I prefer to use a syringe utilizing the stem, this stuff clumps up fast clogging the injector. Had high hopes for this product but I will be going back to other easier to inject products.

I've ben running with Stan's in my tires for a while now, and I've been dealing with chronic leaks. Simply put, Stan's regular cannot handle the pressure of road tires. I've got latex all over my bike frame from the futile spewing of sealant as the wheel spins. Stans racing might be better but doesn't last; it's more of a race-day thing. The leaks Stan's couldn't fix are not massive punctures, but I'm on a road bike and I need my tires to hold up to 80 psi. The first time I put the Silca into the rear tire of my commuter bike and pressurized the tire, two leaks immediately popped. Small holes that Stans had never been able to seal at 80 psi. I spun the tire and the leaks were sealed. That was that. I've got miles on the tire now to prove that the leaks are sealed for good. When you pour the goop into your tire you see why you could never use an injector to push the sealant into your tire. There are lumps of bluish fibers are just waiting to clog something. Silca will clog any tool you use to inject the goo into your tires. The great part is that a dose of Silca can last for up to a year with periodic applications of the replenisher, which will work fine with an injector (the replenisher does not include the fibers). With that in mind, you may want to buy a smaller bottle of the sealant than you would other brands.

Wasn't the normal silca quality Clogged in a bigger chunk in the tire Its probably old or a manufacturing defect

works much better than Stan sealant. I use on Conti GP5000 STR road tires with 60 PSI. Stan wouldn't plug even tiny holes at that pressure. Sealant would splash out until the tires goes down to 30 PSI then the Sealant would stop the leak. Next inflation, hole would open again. Stan is a garbage sealant for road tires. Silca is much much better. only drawback is you cannot inject it thru valve core, you have to poor in the tire. Its actually faster, but can be messy.

Al primo utilizzo mi è sembrato buono, ma la seconda volta che l’ho aperto (1 mese dopo) era diventato un misto tra liquidò e grumi, terribile. Purtroppo era già passato il tempo per la restituzione

幸いこれを使ってからはタイヤに穴が開くという出来事は起きていないので、パンク時の性能については評価できないです。 ただ、空気の漏れなどはスタンズのシーラントより少ない印象がありますので、お気に入りではあります。 気をつけないといけないのはカーボン繊維入りのシーラントのためバルブからの注入がNGな所です。カーボン繊維がバルブに詰まるらしい。 パンクはしたくないですが、見た感じでも大きめのカーボン繊維がいい感じに穴塞いでくれそうで、性能見てみたい気持ちもありますね。

Good