Ultimate Tubeless Sealant w/FIBERFOAM
Ultimate Tubeless Sealant w/FIBERFOAM
Ultimate Tubeless Sealant w/FIBERFOAM
Ultimate Tubeless Sealant w/FIBERFOAM
Ultimate Tubeless Sealant w/FIBERFOAM
Ultimate Tubeless Sealant w/FIBERFOAM
Ultimate Tubeless Sealant w/FIBERFOAM
Ultimate Tubeless Sealant w/FIBERFOAM
Ultimate Tubeless Sealant w/FIBERFOAM

Ultimate Tubeless Sealant w/FIBERFOAM

Size
Regular price$ 18.00
/
Click for Shipping Polices
Rated 5.0 out of 5
Based on 21 reviews

Due to incredible demand for long lasting sealant that seals with the power of carbon fiber, shipping is delayed 7-10 days as we continue to produce new bottles.

  • Free US Shipping Over $99
  • 30 Day Returns
  • Unmatched Support

• Effective down to 10F/ -12C
• Seals 7.5mm holes for up to 6mo
• Must be poured into tire during install
• Not injector compatible (It seals holes bigger than
your valve)
• Use Replenisher every 90-120 days for best
performance
• 6, 9, and 12mm recycled carbon fibers are dispersed evenly by a foaming latex to create ultra strong seals
• CO2 can be used to seat tires but should be removed as soon as possible and replaced with air to preserve life of sealant
• Made in the USA

Limited Warranty

SILCA LIMITED WARRANTY 

Parts covered by SILCA Limited Warranty are considered to be subject to wear through normal use or are consumable subject to degradation through the course of their daily use.  SILCA guarantees the life of these items to be at least 2 years from the date of original purchase.

    Installation Instructions - Shipping Delayed 7-10 Days

    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 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 technologies.

    After the puncture is sealed, that area of the tire 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 (7-9months depending on humidity).

    We recommend adding replenisher every 90-120 days depending on temperature and humidity where you live (see chart) to rejuvenate the sealant. Replenisher can also be used to replenish sealant on very porous tires during initial install. Some casing tires 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.

    Tires with extra-light casing can experience high amounts of weeping.  We have seen this with tires from Rene Herse and Teravail among others.  The extremely porous side walls will soak up a sealant causing premature drying.  To account for this add either an extra oz of sealant or once the tire is mounted, inject an ounce of replenisher. 

    CO2, condensation from compressors, and talc powder can lead to hardening of the sealant.  These should be avoided when installing the sealant.

    average rating 5.0 out of 5
    Based on 21 reviews
    • 5 Stars
      21 Reviews
    • 4 Stars
      0 Reviews
    • 3 Stars
      0 Reviews
    • 2 Stars
      0 Reviews
    • 1 Star
      0 Reviews
    100% of reviewers would recommend this product to a friend
    21 Reviews
    Reviewed by ed s.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5
    Review posted

    I am sold

    I had been using Orange seal and more often than not it didnt seal. I changed to Ultimate and must have punctured cause I had some latex on the frame, but no hole found and I only lost 3 psi. That is how I want my sealant to work. throwing out my orange seal.

    Loading...
    Was this helpful?
    Reviewed by Al
    I recommend this product
    Rated 5 out of 5
    Review posted

    Saved the day!

    Silca saved the day!

    Loading...
    Was this helpful?
    Reviewed by David
    Verified Buyer
    I recommend this product
    Rated 5 out of 5
    Review posted

    Great

    Yep it works as described, best to watch the Silca videos for the install

    Loading...
    Was this helpful?
    Reviewed by ben h.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5
    Review posted

    The Best Sealant

    Will now not use anything else. 7 years of running tubeless and this is the first sealent that gives me confidence to recommend to others.

    Loading...
    Was this helpful?
    Reviewed by franklin b.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5
    Review posted

    Awesome stuff

    Rear tire is pretty beat up but still has some life left in it. Stan’s decided that it didn’t wanna seal the little punctures (let alone a big one that I plugged). Cleaned out the Stan’s and poured some silca in it and everything magically sealed up. Tire is holding the same pressure for days at a time now, don’t even really need to to top it off. Not as stinky and slimy as Stan’s either.

    Loading...
    Was this helpful?