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

Excellent product

The sealants on the market really vary in effectiveness and thickness. Some of the thinner products take longer to seal punctures as they struggle to fill the hole. This is one of the thicker fluids on the market and I have found it really good at sealing the punctures I have picked up.Easy enough to top up existing fluids in the wheel to stop air being lost over night.If you do get a picture with it though, you need to stop as soon as you notice any fluid seeping from the tyre and clean any fluid take has gone over the bike before it dries. It is really very hard to clean off once it’s dry, almost like a glue. I now take a quality piece of absorbent kitchen towel with me in case any fluid gets on my bike while out cycling.

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.

Just ordered my second bottle, my first one has treated five tyres, two 29 x 2.4 Mtb tyres, two 700 x 40 gravel bike tyres and a 29 x 2.35 Mtb tyre, with enough left over for half a treatment in another Mtb tyre, I have had numerous small “punctures” from riding over thorns, and the sealant has successfully sealed them all, in a year of use I have not experienced any real loss of tyre pressure using this product, highly recommended to anyone looking for a good quality tubeless sealant!

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"... 😏

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!

I have waited to post this review until I have actually had a puncture.I went tubeless at the start of the year, and after some research decided to use this sealant in my specialised pathfinder pro tyres.The sealant comes with a tube attachment, that can directly fitted to your wheel valves. There are markings on the bottle so it is easy enough to guestimate the amount of gunk you have put in.When you do get a puncture the gunk is easy to spot.After about 1200 miles, I had a puncture that was a lot bigger than I realised. I thought it was just a small hole and I was able to ride my bike for about 150 miles (inflating every other ride) before deciding to do proper fix.The fix entailed pushing one of the large tyre fixing strips into the hole using a puncture repair tool.Overall this was a lot less hassle than punctures I have had with innertubes where it has sometimes been too cold to change the tyre, too muddy to see the tyre or I have missed glass embedded in the tyre and ended up puncturing the replacement tool.So far so good.

Why, when I use Muc Off products for most things on my bikes, did it take so long to find this. As long as it is shaken/mixed well and then injected through the valve stem (rather than the hit and miss measure on the bottle), it does exactly what it says. I like the fact that little black bits that are visible against the pink latex solution so that you can see it is mixed at all stages of use. My tubeless tyres maintain there pressure for ages, whereas before I was having to re-inflate almost every day. After a long ride I lose around 3 -7 PSI on tyres inflated to 75 PSI, so no real degradation in performance.