Muc-Off Road & Gravel Tubeless Sealant 1 L

Muc-Off Road & Gravel Tubeless Sealant – Advanced Puncture Defense System

80ml, 140ml, 500ml, 1L, or 5L bottles | Advanced synthetic latex + biodegradable mineral flakes | Seals punctures up to 7mm | Works up to 110 psi | Non-toxic, ammonia-free | Road, Gravel & CX

Punctures end rides. Muc-Off Road & Gravel Tubeless Sealant ends punctures before they become problems—a high-performance, water-based latex formulation engineered to seal holes, tears, and porous tire surfaces instantly when they occur. Built on cutting-edge polymer chemistry and reinforced with biodegradable mineral flakes and bamboo fiber particles, this sealant bonds to the inner tire wall like armor, remaining suspended until a puncture forces it into action. The result is reliable, predictable protection across thousands of kilometers—from road centuries through gravel marathons to cyclocross chaos—without the weight penalty, toxicity, or environmental guilt of older ammonia-based formulations.

Key Features

• Advanced Synthetic Latex Water-Based Formula: Proprietary polymer chemistry creates a free-flowing sealant that coats the inside tyre wall evenly, remaining suspended until puncture impact activates it; zero ammonia, zero natural latex, zero harsh chemical smell
• Seals Punctures Up to 7mm: Cutting-edge molecular sealing particles bond instantaneously to tears, holes, and porous tire surfaces; handles sidewall tears, valve stem leaks, and bead-gap seepage without re-taping or tire removal
• Biodegradable Mineral Flakes + Bamboo Fiber Particles: Natural mineral and plant-based sealing agents eliminate environmental guilt—the sealant breaks down harmlessly and won't poison soil or groundwater when you eventually dispose of tires. Project Green credentialed
• Non-Toxic & Allergy-Free Formula: Safe to handle without gloves; no skin reactions, no respiratory irritation, no ammonia fumes; makes sealant top-ups a quick, pleasant task rather than a chemical hazard cleanup
• 3–6 Month Durability: Formulated to remain effective across an entire season of riding; water-soluble construction means it doesn't harden or cake inside the tire—simply top up when sealant volume drops
• Works Up to 110 psi: Engineered for high-pressure road and gravel setups; maintains sealing integrity across the full pressure range from 80 psi (gravel) to 110 psi (road disc) without breakdown or separation
• Application Flexibility: Inject through removable Presta valve cores or add directly into unseated tires; no special tools, no mess, no learning curve—shake, squeeze, spin, ride
• Temperature Resilience: Won't freeze down to −15°C and remains effective at +50°C, making it reliable across hot GCC summer rides, alpine descents, and year-round gravel racing
• CO₂ Compatible: Works seamlessly with CO₂ cartridge inflation—the advanced polymer formula doesn't separate or clog when CO₂ is applied from the top of the wheel
• Multiple Size Options: 80ml (single emergency fill), 140ml (commuter one-off), 500ml (two-bike maintenance), 1L (regular top-ups across a quiver), and 5L (team/workshop supply) eliminate waste and offer best-per-use value

Technical Specs

Perfect For

Road cyclists committed to tubeless who demand puncture insurance during centuries, multi-day tours, and stage racing on debris-strewn tarmac. Gravel racers running mixed surfaces (pavement, gravel, fire roads) where sidewall cuts and sharp flint threaten to end rides far from civilization. Cyclocross racers requiring bulletproof sealant that stays bonded through repeated tire removals, pit-stop re-inflation, and muddy chaos. Riders in arid, hot climates (GCC region, North Africa, Middle East) where sealant evaporation is a constant threat—the Project Green formula is engineered for high-temperature reliability without chemical degradation. Anyone upgrading from ammonia-based sealants who values non-toxic handling and environmental responsibility. Bike mechanics and workshop teams stocking the 5L bottle for recurring maintenance across customer fleets.

How to Use

Shake the sealant pouch or bottle vigorously for 10–15 seconds to activate and mix sealing particles. If your Presta valve cores are removable, unscrew them (non-removable valves: pour sealant directly into unseated tire). With the valve at 12 o'clock and the bike on a work stand, position the pouch over the valve stem and rotate it to 6 o'clock. Squeeze the desired amount (use the fill line markings on the pouch as your guide: 40–50ml for road 23c/25c, 50–60ml for road 28c, 70–80ml for gravel 30c–45c). Re-insert the valve core, inflate to your preferred pressure, then repeatedly spin the wheel, shake it side-to-side, and rotate it through all directions to distribute the sealant evenly across the tire's inner wall. The sealant settles into a thin, even coating—ready to seal the instant a puncture strikes.

Maintenance & Longevity

Check tire sealant volume every 3–6 months (or every 2 months in climates above 35°C). The sealant remains suspended and won't ball up, so you won't need to remove or clean it—simply top up when volume drops and re-spin. In hot, dry riding conditions, plan for more frequent top-ups. When eventually retiring a tire, dispose of sealant per your local regulations; the water-soluble, biodegradable formula has minimal environmental impact. Avoid mixing this sealant with other brands; always degrease tires completely before converting to a new sealant type.

Why Choose Muc-Off Road & Gravel Sealant

Older ammonia-based sealants deliver performance at a cost—harsh chemical fumes, skin irritation, environmental guilt, and faster evaporation in heat. Muc-Off's advanced latex formulation seals just as fast and just as reliably while eliminating all three drawbacks. The biodegradable mineral-plus-bamboo-fiber design means you're protecting the planet you ride on, not poisoning it. The non-toxic chemistry makes maintenance a chore you can actually tolerate. For road and gravel riders committed to tubeless across their entire quiver, this is the sealant that turns flats from certainties into non-events.