Off MTB Sealant 140ml | Advanced Tubeless Tyre Sealant with UV Dye, Seals Holes up to 6mm, Lightweight Formula for Mountain and Enduro Bikes

Muc-Off No Puncture Hassle Tubeless Sealant is hands down one of the best sealants I’ve used for my MTB. It delivers on its promise and keeps me riding worry-free! Why It’s Awesome: ✔️ Seals Punctures Fast – Instantly plugs holes up to 6mm, keeping my rides smooth and uninterrupted. ✔️ Long-Lasting Formula – Stays effective for months without drying out too quickly. ✔️ Works in All Conditions – Performs well in both hot and cold weather, ideal for year-round riding. ✔️ Easy to Apply – The included nozzle makes it mess-free and simple to pour directly into the tire. ✔️ UV Detection Technology – Helps spot leaks so I can be sure my tires are properly sealed. ✔️ Ammonia-Free & Safe – Won’t damage my rims or tires, unlike some other sealants. I’ve taken this sealant through rocky trails, muddy tracks, and rough terrain—it never lets me down! If you're running tubeless, this is a must-have. Highly recommend! 🚴‍♂️💨 Works like magic!

Great product!

I thought having a new eMTB with tubeless tyres was going to be a Godsend - it turns out I was wrong! A new Trek eMTB with, I assume, Bontregar sealant, failed miserably within the first few weeks. A puncture happened, but instead of sealing it the sealant just continued to pour out, never once sealing the hole. I repeatedly pumped the tyre and limped home. Left the tyre inflated with the puncture downmost, but the next day when I came to pump the tyre up to correct pressure, it just spat out the plug that had formed. I had to remove the tyre and patch the tyre itself. Then clean out the old sealant and replace it with this product, as it was the highest recommended. But, you have to change it every six months! If I was on my old bike and got a punctured, I would have had a spare innertube, that I carry, fitted and been on my way in less than five minutes. With tubeless it only put an end to my ride and took two days to get back up and running. Isn't technology wonderful. If a standard tube fitted these tyres I would have gone back to tubed. Only they're wider and the tubes cost mega £. But if I get another puncture and this goo fails it's getting a tube. And I'm not spending £8 every six months when I can just put an innertube in there for life!

My 12 year old boy used this product all by himself, in my living room! Luckily it made no mess and was easy to use. Fits straight onto the presta valve and you just squeeze it in. Brilliant product and now part of his bike maintenance kit. Great value for money as a lot left over.

Always use Mac off products never had days problem always cheap on price and easy to use

sealent for tubeless tires and rims, sealed fully, tho does take a few days to fully stabilize, but once it is fully sealed, the job is done

Sealed my tyre perfectly and air never leaked again. Very easy to use

blurb says that a valve removal tool is provided. It isn't which is a total pain for me as I now have to go out and buy one. The amazon description is wrong or I got sent the wrong thing. All I received is the bag.

Impeccable, le Muc off fonctionne très bien pour les crevaison. Je l'utilise pour mon vélo de route et un petit avantage, avec une lumière violette vous pouvez savoir ou vous avez crevé.

Bekanntes Produkt, bekannte (Top-) Performance. Schnell und zuverlässig geliefert.

Sealant toevoegen is met dit spul zo simpel!

Utilizzo il Muc-Off No Puncture Hassle Tubeless Sealant da un po’ di tempo sulle mie ruote tubeless (MTB e gravel) e devo dire che è uno dei migliori sigillanti provati finora. Anche se la confezione era già aperta, il prodotto si è dimostrato perfettamente efficiente: consistenza fluida, nessun grumo, e ha sigillato un piccolo foro da 4–5 mm in pochi secondi senza far perdere troppa pressione. Si applica facilmente con il beccuccio fornito, anche tramite la valvola presta. Il colorante UV è una trovata geniale: con una lampada UV ho individuato subito dove aveva lavorato. Nessun odore fastidioso (non contiene ammoniaca). Dopo settimane di utilizzo, il liquido è ancora attivo e non si è seccato. Consiglio pratico: Agitatelo bene prima dell’uso e controllate che la valvola sia libera, così entra in modo uniforme. In sintesi: Sigilla rapidamente, non sporca troppo e dura nel tempo. Anche acquistato “usato”, si è rivelato super funzionante e affidabile. Ottimo per chi cerca un prodotto di qualità professionale per bici da corsa

Great to keep in your bag for back up Works great on fighting flat tires