Muc-Off No Puncture MTB Hassle Tubeless Sealant, 80ml - Tubeless Tyre Sealant for Bicycle Puncture Repair - Durable Bike Tyre Sealant for Mountain Bikes

I've been using Muc-Off Tire Sealant for a few months now and it's exceeded my expectations. Installation was quick and mess-free thanks to its smooth consistency, and the UV detection feature is a clever touch for spotting any issues early.What really impressed me was how quickly it sealed punctures—I hit a thorny section on a trail ride and barely noticed the leak before it sealed up within seconds. No pressure loss, no stopping, just confidence to keep going. It’s lightweight, eco-friendly, and doesn’t clump like some other brands I’ve tried.Highly recommend it to anyone who wants a reliable sealant that just works when you need it most!

Great stuff, easy to use. The 1 litre bottle does also come with the silicone filling tube so you can chuck it straight in the valves.

Excellent. Had several small thorns in my tires and it sealed them straight away.Note the stuff can be a little messy. So use outside.

Overall, it does the job, but it’s much more liquid than other sealants I’ve used. It seals small punctures well, but for larger ones, it doesn’t always work as effectively as thicker sealants.Application is easy and mess-free, and the UV detection is a nice touch for spotting leaks. However, because it's more watery, it tends to pool in the tire rather than coat it evenly, so I find myself shaking the wheel more often to get proper coverage.Overall, it’s decent and works most of the time, but if you’re used to a thicker sealant, this one might take some getting used to. Probably best suited for smaller punctures rather than bigger gashes.

First time converting tubeless ready to tubeless. I had read a number of different ways of doing this and decided that after fitting the valves I would seat the tyre to the rims using a co2 canister as I have no access to a compressor and a track pump sounded like hard work! I didn't want to risk spilling fluid everywhere trying to seat the tyre after pouting it into an unseated tyre. I had tubeless ready rims and decided to go with the already installed spoke band that was on the wheel (aparrantly you shouldn't do this!). After inflating without this product, I had a fair size leak from one spoke... Decided to go for it based on the previous reviews and removed the valve core and used the tube on the bottle to put the fluid in through the valve. No mess at all, and the fluid stopped the leaky spoke after about 5-8 minutes of doing the tyre shuffle, bit by bit it went from a worrying liss to inaudible. I only used the recommended amount and am running 29rs X 2.25. I needed to inflate the tyre a couple of times as pressure dropped initially. Thought I had messed up the whole process and would need to remover the tyre and start again! How wrong was I? Have checked the pressures every couple of days since and have lost nothing! There is also a handy window on the bottle with a guage to show you how much you have added to the tyre and there is probably still enough for when I need to service them at least twice more again! Yes, a little expensive compared to other options but I think muc off have "Nailed It"... 😏

Second purchase of this. It seals well, lasts a long time and is good value. Honestly - if you're using inner tubes, go tubeless and save yourself a ton of grief. I got fed up with endless punctures, went over to this stuff and haven't had one since. It's amazing.

Excellent product

Great for making your gravel tyres tubeless, easy to use.