Muc-Off No Puncture Hassle Tubeless Sealant, 1 Liter - Advanced Bicycle Tyre Sealant with UV Tracer Dye That Seals Tears and Holes Up to 6mm (1 Liter (Pack of 1))

I have tried a few brands of sealant and Muck-off consistently works and have never had a problem. I will buy again.

I used 2 ounces of sealant to top off 29” x 2.4 Maxxis tire that was originally installed a year ago with Stan’s Sealant. So far, no leaks and holding pressure.

I’ve used this in my tubeless road bike tires for years and always had good luck with it sealing up.This spring, I tried it on my lawnmower you’re that was leaking and it sealed right up and hasn’t leaked since. Highly recommend this!

I worked at a bicycle shop for many years and have used a lot of different UST sealant products. So far I like this one more that the other brands that I have tested. It is easy to use and doesn't dry up or clump like others.

The real question is, "Does this product seal punctures?" The answer is, "Yes, with reservations." During the last couple of months, It has sealed four punctures for me and my riding buddies. All punctures were caused by "wire whiskers" (apparently from worn out automobile steel-belted tires), and thorns ("goat heads"/"puncture weeds"). BUT, it failed to seal a 1/8" glass cut. Could the cut have been 1/4"? Possibly. In any case, it failed to seal, and after running out of gas cartridges, there is no way to fix the hole (short of inserting a tube), because the sealant requires some pressure to force it into the puncture. Also, the first time you use this product, it isn't as mess-free as advertised. The learning curve is short, though, and subsequent times are much better. Good news is that spilled sealant cleans up easily with a damp/wet cloth. Incidentally, I now put in 60 ml. of sealant every two months, i.e., twice as often as recommended. I do not bother to remove the sealant still in the tire when I add new fluid. This doesn't seem to make a difference, and it saves a lot of work.

Works good just add more than you would normally add , cool looking bottle too and it has a tube to go over your valve stem if you don’t have a syringe

This is a must have for any mountain biker.Seals punctures quickly, very durable. Highly recommend it. Best we have used so far!

I've had at least two punctures that I know of since switching from tubes to Muc-Off Tubeless Sealant. First was a roofing tack that went straight into my tire. I pulled it out, sealant bubbled from the hole for about a second, and then it stopped. Didn't lose any tire pressure, and the seal held.Second was a small gash in the sidewall right near the rim. Now this one didn't seal up on its own, but the sealant did reduce the amount of air escape so I didn't have a sudden catastrophic loss of pressure. It took two bacon strips to plug the hole, and then it sealed and surprisingly held for several weeks before the bacon strips popped loose, and I just replaced the tire. To be fair, that's a tough situation for any sealant to deal with, so I'm impressed with how well Muc-Off performed.Other things I like: the bright pink color stands out and is easy to see if you're hunting for a leak, it remains liquid in the tire for a long time, it smells like a fruit smoothie, and it washes away with plain water.