Muc-Off MTB Tubeless Sealant, 1L

I always buy muc-off tubeless sealant for my mountain bike, also have muc-off valves. It's an easy process if you have a tool to remove the valve. I noticed my tyres were losing pressure a bit quicker than they should as they are worn & have a few battle scars like cuts. I decided to top them up with the sealant which has done the trick & prevents future leaks. I usually re seal every 6 months. The 1 litre bottle is better value for money & lasts a while. The bottle cap was damaged when arrived but Amazon rectified the issue. Bought before & will be buying again. Recommended.

Great fluid suitable for my mountain bike tyres. Will be puncture free now very easy to use and hopefully piece of mind when out riding.

Works a treat. I had a tear on the bottom of a nobble, couple two puncture plugs with this and saved my tyre. I really wouldn't recommend doing that though for safety reasons 😂 Great product though and comes with a tube to easily fill the tyre through the valve stem so there's no need to break the bead and re-sill

I've churned through loads of different sealants in my road bikes and mountain bikes. This one from Muc-off is one of the better ones. Setup was fine, typical level of hassle seating the tyre on the rim. It's one of the thicker sealants so needed a little more time to spread around the inside of the tyre before seating. For me the most important feature of most sealants is the ability to plug a hole or a cut quickly. Here the muc-off sealant does very well, with some caveats. Firstly, you absolutely must shake and invert the bottle before filling. If you don't, you won't get any of the black sealing lumps in and it becomes pretty useless. I forgot to shake when filling one tyre, and when I ran through some sharp flints the sealant happily ejected through several small holes with no sign of sealing. Replacing the lost sealant with some that was thoroughly mixed sealed them instantly. Secondly this struggles when it's very cool and wet (so British winter/spring/autumn and, tbh, summer). On a dry day the sealant works fine at any temperature. But if your wheels are sat in cold wet puddles the sealant doesn't really solidify and continues to seep steadily through punctures. This is a bit of a disaster when you do the usual trick of putting the puncture at the very bottom of the wheel to allow sealant in; you end up with the wheel on wet ground and the water promptly de-seals the rupture. So I have resorted to drying the wheel around the puncture, then getting sealant in by spinning it fast to distribute sealant around. 30 seconds in dry air usually gets the hole sealed. All of that said... when it's working, this seals bigger holes than Stans or Orange Seal and does so more quickly. It lasts far longer too, mine has still been good after six months or so (thanks cool, damp british climate!). It's made me almost immune to the shards of glass, stone, tacks that litter the roads

SO good easy to use

Great value and works a treat.

Great product, use it all the time

Great stuff. Helps my tyres fixes its own punctures while cycling in the forest

Not sure if the mixture is really that thick. Pls refer to the photo. Its not sealing the tyre.

Bardzo wykona butelka. Mleko działa tak jak inne - zatkało dziurę więc działa.

As usual a quality sealant from muc-off. A bit expensive compared to others but it’s worth it because the sealant is quite thick and lasts a long time. Also I have never gotten a flat tire even when the tires got punctured.

This is a messy process but works.

Uso la bici praticamente ovunque: sterrato, sentieri pieni di pietre, stradine di campagna e quel fantastico terreno misto “fango + spine assassine” che sembra studiato apposta per bucare le gomme 😅 Da quando sono passato a questo Muc-Off No Puncture Hassle, le uscite sono diventate molto meno “creative” dal punto di vista delle imprecazioni. L’ho montato sulla mia MTB tubeless e la differenza rispetto ad altri sigillanti provati in passato si nota subito. La consistenza è più corposa e soprattutto resta efficace anche dopo parecchio tempo dentro la gomma. Con altri prodotti mi capitava di aprire il copertone dopo qualche mese e trovare praticamente il deserto del Sahara. Qui invece il lattice era ancora attivo. La prova vera l’ho avuta durante un giro su sterrato: sento il classico “tssss” della gomma che perde aria, già pronto mentalmente a tirare fuori camera d’aria, leve e dignità… invece dopo pochi secondi il foro si è sigillato da solo 😳 Ho continuato il giro normalmente e me ne sono accorto solo perché sul copertone era rimasto il segno del liquido verde fluorescente. Magia? No, semplicemente funziona davvero. Il colorante UV è una chicca utilissima: una volta avevo una micro perdita lentissima che mi stava facendo impazzire e con una lampadina UV ho trovato subito il punto preciso. Sembra CSI versione mountain bike 😂 Vantaggi che ho notato rispetto ad altri sigillanti: Sigilla molto velocemente anche fori abbastanza fastidiosi Rimane liquido più a lungo dentro il copertone Ottimo anche su gomme MTB usate in modo aggressivo Il tracciante UV è davvero utile, non solo marketing Non crea quei “grumi giganti” fastidiosi dopo poco tempo Piccoli svantaggi: Quando lo versi bisogna fare attenzione… perché il verde Muc-Off finisce OVUNQUE 😅 Ha un odore abbastanza forte appena aperto Se smonti il copertone dopo mesi preparati a trovarti le mani artisticamente decorate di lattice fluorescente 😂 Provato sulla mia pelle… anzi, sulle mie gomme 😄 e per ora è il sigillante tubeless che mi ha dato più tranquillità durante le uscite. Non fa miracoli su tagli enormi ovviamente, ma per spine, pizzicature e fori normali mi ha evitato un sacco di soste inutili in mezzo ai boschi 👍