Muc-Off MTB Tubeless Sealant now features a new and improved formula that seals punctures up to 7 mm, up from 6 mm, with a quicker sealing response. Biodegradable sealing particles made from mineral flakes and bamboo fibers fill holes and tears, and a thinner consistency makes it easier to pour. The new formula is gray-blue instead of the previous pink, and the bottle has updated icons and fluid ounce sizing. The part number and UPC have not changed, and Muc-Off is rolling out the update gradually, so either version may arrive. Both are the same product. A UV detection dye highlights punctures missed on the ride, and the non-corrosive formula washes off with water. Compatible with tubeless-ready and UST wheels and tires from 15 to 120 psi and -20°C to +50°C. When switching from the old formula, rinse tires first for best sealing.

• Seals punctures up to 7 mm (previously 6 mm) with a quicker sealing response
• Biodegradable sealing particles made from mineral flakes and bamboo fibers
• Thinner formula for an easier pour
• New formula is gray-blue; previous formula was pink
• Same part number and UPC; old and new formulas may ship during the rollout
• UV detection dye highlights punctures missed on the ride
• Non-corrosive and washes off with water
• Compatible with tubeless-ready and UST setups from 15 to 120 psi and -20°C to +50°C