SILCA Ultimate Sealant (500ml) combines injectable Fiberfoam® technology with a hybrid natural and synthetic latex formula to deliver the highest level of longevity available along with unbeatable puncture sealing capabilities for tubeless tires. And now it's designed to be easily injected through valves with removable cores, eliminating the potential for mess.
SILCA Ultimate seals holes up to 7.5+mm, 25% larger than conventional sealants. Recycled carbon fibers form an interlocking "fiber dam" for increased surface area for faster sealing with minimal air loss. These fibers are 400% stiffer than fiberglass, ensuring punctures are sealed quickly and effectively.
The hybrid latex formula increases durability, extending performance life to up to 6+ months (depending on environmental conditions). It's also Winter-ready, effective even in the cold.
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-059-ASY-0101 | |
Category: Tire Repair | |
I usually love Silca products but this sealant is a huge miss and left me with countless flats and a bike and jerseys absolutely covered in sealant several times over. I heard the first iteration of their sealant had some issues but that this new formulation was supposed to be good so I decided to give it a try. I run GP5ks and ride in an area with a lot of glass on the road so I need sealant that performs well. Unfortunately this sealant couldn't handle even the smallest of punctures and within a month I had about 4 persistent, recurring punctures that would just spray and spray. I had NEVER had to use a plug before using this sealant, but this brand new tire got ruined so quickly when I switched to this sealant and I'm not comfortable riding on a tire with 5 plugs. As others have stated around the internet, it seems that the carbon fiber immediately clumps up at the bead and valve stem and doesn't remain in solution. I've never seen sealant just endlessly spray out of a puncture like this stuff does. An absolute mess I am not willing to deal with. Going back to the color-named sealant. Rare Silca L
I had two small punctures that took a long time to seal. A day or two later on my next ride they reopened. After this happened a couple times I ended up plugging both the holes. One the plugged holes started leaking a week or so later. Going back to Orange Sealant which worked well last year but has a short refresh period.
I've had good luck with the Silca sealants, it's very sticky and seals up almost anything even on a road tire for me. I like that this is injectable now, I don't have to break the bead of the tire to do the pour in method. Just go slow with the injector and it won't clog up with fiber bits.
I haven't had this long enough to test the 6 month claim, but if it lasts that long, this is a game changer. I can do a spring/fall switchout and be good for the year.
Just switched to Silca Ultimate because the reviews say that it will seal larger punctures and will last longer before needing to be replaced. Haven't had this sealant in my tires long enough to have a first hand opinion.
Would love to tell you about its sealing ability, but after several tough rides, I haven't had a puncture. I like that it isn't a neon color, unlike some brands, and is thicker, making setup and dismounting tires less messy.
