Stan's No Tube Preventive Liquid Tyre Sealant

Product Information

Joe’s No Flats offers several sealant variants, from the standard version to more road-orientated and eco-based formulas. The Elite Racer version we tested is latex-based containing particles within the solution to seal punctures of up to 6mm in size. Effetto Mariposa's Végétalex Tyre Sealant is quite different to anything else we've used. It's got a gloppy, almost oily, gelatinous consistency to it, which is a result of its plant-based ingredients – it's fully biodegradable and totally plastic-free. They also help form an airtight seal between the wheel rim and tyre when you first mount a new tyre, so that the tyre will hold air and keep its pressure. If the tyre could continue to hold 70psi after the puncturing, then the next step was to repeat with the next size up – until the tyre could no longer hold 70psi without the hole reopening. The size and volume of the tyre will denote the amount of tubeless sealant that is required, but to be safe, we recommend following the manufacturer's instructions, as the different formulas require different quantities of sealant to produce effective puncture protection. Can I run tubeless without sealant?

Another sealant stalwart, Orange Seal is a brand with a long history. However, in this test, the results weren't superlative. Still, 6mm is a very good performance – better than any of the other sealants we tested except Silca – and especially at these higher pressures we tested at. To be fair, the sealant did manage to plug holes up to and including 3mm at 70 psi, which is on par with both the Stans and Effetto Mariposa. The Orange Seal Regular sealant also plugged those smaller holes faster than the Stans No Tubes sealant was able to. We are now making our Race Sealant available to riders everywhere. Stan's Race Sealant is only available by the quart.

Also consider

The best way to think of tubeless sealant is as the lifeblood of your tubeless system. Its primary job is to plug puncture-causing holes by coagulating or, keeping the blood reference, by clotting. The best tubeless sealants form a seal that will ensure the tyre remains airtight. Most latex-based sealants also contain small particles, such as glitter or small fibres, suspended in the liquid. And just like the Silca sealant, it did take two tries pumping the tyre up to 70psi after being punctured with the 6mm screwdriver for the hole to be fully plugged and able to hold the pressure.

At 7mm, the hole would seal at around 30psi, but it wouldn't hold pressures any higher than that – repeatedly inflating the tyre and the seal would break every time.When we first squirted the full 140ml there didn’t seem like much left in the bottom of the tyre, but we needn’t have worried because this luminous pink gunk sealed the 2.75mm puncture in barely a revolution. It also sealed the larger 5mm almost instantly and, while most sealants on test only sealed the sidewall cut temporarily, NPH sealed it permanently and we even managed to re-inflate the tyre after about an hour. However, the claimed longevity is significantly less than all of the other sealants we tested, which stands to saddle you with increased maintenance and cost. The temperature rating also isn't as low as some of the other sealants with equal or better sealing ability. Essentially, the Muc-Off No Puncture Hassle Tyre Sealant sits bang slap in the middle of the Silca Ultimate sealant (more effective but more expensive) and the Lifeline Tubeless Tyre sealant (less effective but cheaper). How long a sealant will last depends on the conditions your bike is kept in, the sealant you've chosen, and how many punctures it'll need to plug. Don’t just guess the amount of sealant to put in. Start by putting in the amount of sealant the manufacturer recommends. For Orange Seal, it would be 2oz (57ml) of sealant for a typical 700x25c tyre. It should be enough to coat the inside surface of the tyre but not too much to add excess weight.