Silca Ultimate Sealant 2.0

Pro-Level Sealing. Every-Day Reliability.

The Silca Ultimate Sealant 2.0 introduces the world’s first Hybrid Natural and Synthetic Latex blend. This new formula addresses the two biggest complaints of the original: it now lasts up to 6+ months inside the tire and is fully injectable through the valve. By optimizing the length of the recycled carbon fiber strands, Silca has ensured that the sealant flows through an injector but still creates an interlocking "fiber dam" the moment it hits a puncture.

Why the 2.0 is the New Standard for Tubeless:

• Seals 6mm+ Punctures: Utilizing high-stiffness carbon fiber strands (400% stiffer than fiberglass), it creates a structural plug that can hold high road pressures and large gravel gashes.

• Injectable & Easy to Maintain: No more popping the tire bead. The revised carbon strand length allows you to inject the sealant directly through the valve core for clean setups and quick top-ups.

• Hybrid Latex Longevity: The proprietary blend of natural and synthetic latex keeps the sealant liquid for 6–12 months, significantly outlasting the 2-month lifespan of the previous version.

• Advanced Foaming Agent: Features a specialized foaming agent that carries the carbon fibers to the puncture site instantly, ensuring a fast, airtight seal with minimal air loss.

• CO2 Safe: Unlike many natural latex sealants, the 2.0 formula will not coagulate when exposed to CO2, making it safe for quick trailside inflations.

• Extreme Temperature Range: Performs reliably in temperatures as low as -15°C (5°F), making it a true year-round solution for commuters and winter adventurers.

• Ammonia-Free: Safe for all rims and tires, preventing long-term corrosion or degradation of your expensive carbon or alloy wheels.

Technical Specifications:

• Sealing Capacity: 6mm+ holes and slits

• Longevity: 6 to 12 months (depending on climate)

• Freezing Point: -15°C / 5°F

• Base: Natural & Synthetic Latex Hybrid (Ammonia-Free)

• Reinforcement: Recycled Carbon Fiber Strands

The Alegro Perspective: In the shop, we used to save Silca for race day only because it was such a hassle to install. With 2.0, that’s gone. It’s now as easy to use as anything but with the "holy grail" sealing power that can actually handle high-pressure road tires. If you're tired of sealant spraying all over your frame while a puncture refuses to close, this is the upgrade you've been waiting for.

6mm Sealing Power. 6-Month Longevity. Ride Without Compromise with Silca.