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Peaty’s tubeless sealant

As well as testing Peaty’s tubeless sealant on the trail, where it continues to stave off punctures, we also did some experimentation in the workshop. We mounted a 29x2.3in tyre on a rim, added the recommended 100ml of sealant and inflated it to 30psi, then attempted to puncture it with a variety of different picks, screwdrivers and even a knife.

When we pierced the tyre with a 3mm pick, a quick bit of wheel rotation and a couple of bounces encouraged the nanoplatelets in the sealant to plug the hole pretty rapidly, leading to only a small drop in pressure. A 4.5mm screwdriver caused a little more pressure loss, but the slit was soon sealed. After some time and intermittent leaking, a 6mm gash was dealt with successfully, though we did need to top up the tyre afterwards. Peaty’s sealant even held its own when faced with an 8mm hole. The tyre did deflate though, and still leaked a bit once pumped back up. In the end, it was only a 10mm slice that proved too much for the fluid to cope …

Orange Seal Tubeless Tire Sealant

SO GOOD
Orange Seal’s thick latex solution contains particles of varying sizes, which really makes a difference.

Effetto Mariposa Caffelatex sealant

SO GOOD
This Italian-made sealant is designed to foam up, allowing it to better coat the inside of the tyre. It also contains tiny particles to help clog up holes.

Stan’s NoTubes Tire Sealant

SO GOOD
Probably the best-known sealant, Stan’s is popular for a reason – it works. The hole left by our biggest screwdriver was sealed within just one or two revolutions of the wheel.

Continental RevoSealant

SO GOOD
Conti say this sealant is designed to work with their own tyres, but it performed well with our Maxxis test subjects all the same.

Joe’s No-Flats Super Sealant

SO GOOD
Joe’s is the cheapest sealant here but it does the job. It’s on the thinner side, which allows it to coat the inside of the tyre nicely but remain mobile enough to fill any holes.

Wickens & Soderstrom No.8 sealant

SO GOOD
The yoghurt-like consistency and large particles make the W&S sealant handy for seating baggy tyres or fixing bigger holes, so long as you’re patient and keep feeding it in. It works best when mixed with a runnier sealant and inflated with a track pump to force it into the holes.