Silca Ultimate Tubeless Sealant 473ML/6OZ

Make punctures a thing of the past with the power of carbon fiber infused sealant. The recycled carbon fibers provide structure to seal the largest punctures while maintaining longevity of endurance specific formulas.
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, racecars, 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. At this high fiber loading, bundles of 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 hole. During this process, the carbon fibers form a dam of fibers against the tyre 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 technologies.
This great product from SILCA is available in multiple sizes depending on your riding needs and use, check out the various size options and the replenisher here.
Specifications:
- Effective down to 10F/ -12C
- Seals 7.5mm holes for up to 6 months
- Must be poured into tyre during install
- Not injector compatible - this product seals holes bigger than your valve
- Use Replenisher every 90-120 days for best performance
- 6, 9, and 12mm recycled carbon fibers pieces are dispersed evenly by a foaming latex to create ultra strong seals
- CO2 can be used to seat tyres but should be removed as soon as possible and replaced with air to preserve life of sealant
- Made in the USA
After the puncture is sealed, that area of the tyre is left with a zone of carbon fiber reinforced latex bridging the top and bottom of the hole, helping to reduce the likelihood of future punctures in that area when compared to other sealant additives such as cornmeal, glitter, or fiberglass. This superior sealing ability and hole reinforcing ability of the carbon fiber also allows for a higher concentration of anti-freeze agents in the sealant which means more effective sealing at low temperatures (6mm holes seal at 18deg F/ -7deg C), as well as longer lasting sealant (7-9 months depending on humidity).
We recommend adding replenisher every 90-120 days depending on temperature and humidity where you live to rejuvenate the sealant. Replenisher can also be used to replenish sealant on very porous tyres during initial install. Some casing tyres are very porous and will experience weeping of sealant throughout the casing sidewalls. Testing shows that weeping sidewalls can reduce sealant volume by 30% during the install, while also accelerating the aging of the sealant. Adding 30-50% of sealant volume back with the replenisher can ensure optimum performance and maximum life. CO2 can be used temporarily to seat the tyre, but should then be released and replaced with the floor pump to preserve the life of the sealant.