Ultimate Tubeless Sealant w/FIBERFOAM

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.

Free Economy shipping on orders $75+ within the continental US.
Free pick up at Dragonspine Cycling, Chicago.

Standard items

• Economy: $12.99, free on $75+ · 5–8 business days
• Expedited: $15.14, $2.15 on $75+ · 2–5 business days
• UPS 2nd Day Air: $34.99 · up to 3 lb
• FedEx Standard Overnight: $64 · up to 3 lb

Oversized items
Wheels and wheelsets, forks, frames and framesets, racks, repair stands, trainers, trailers and bike travel cases.

• Economy: $35, free on $750+ · 5–8 business days
• Expedited: $45, $10 on $750+ · 2–5 business days

By quote
Standard items over 3 lb by 2nd Day or overnight, oversized items by 2nd Day or overnight, and international shipping. Contact us or call +1 (872) 946-7006.

When orders ship
Items in stock at our Chicago location ordered by 3 PM CT on a business day ship the same day. Items from our warehouse ship within 4–5 business days. Warehouse items are ready for pickup in 4–5 business days.

Free-shipping thresholds are based on the order total after discounts. Full details in our Shipping policy.

Have a question? Contact us now.