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Bat Tyre Sealant is a latex-based sealant infused with suspended particles designed to clog holes quickly, and it’s something it does well. It seems good at staying liquid instead of drying out, but this small bottle works out pricey and it’s generally tricky to track down.
Bat claims this uses ‘rapid seal technology’ so punctures seal faster while using less sealant, but is more or less silent on what that ‘technology’ actually entails.
Any details as to who or what Batseal is or does are incredibly hard to track down, but the South African company does use very funky cartoon-inspired graphics (Lichtenstein, if you’re feeling cultured) that stand out when you do find it.
Glug
At a guess, ‘rapid seal technology’ is strongly linked with ‘having bits in.’ Rub a bit of shaken-up Bat Sealant between your fingers and you can feel the gritty friction of these particles, and leave a small bit in a saucer it will separate slightly and the particles will become visible. It’s definitely worth following the instructions and shaking it all up before glugging it into a tyre, so they can swoosh around and be ready for hole-clogging everywhere.
Despite the big particles it’s still an easy liquid to squirt through a valve core without instantly gumming it up. Bat recommends 60ml per tyre for racing snakes or 125ml for more regular use, which means this 125ml bottle is good for one tyre if you’re pragmatic or two if you’re feeling brave.
Bat doesn’t say what size wheel and tyre these measurements are for, though these volumes suggest a mountain bike so you might make it last a little more.
Spray
I didn’t get any hiss, bubble, spurt or spray indications that the sealant was having to work hard, and the existence of some thorns embedded in the tyre (a cyclist’s nemesis around here) indicated that it did its job perfectly.
In lieu of any real world tyre slashes or gashes to test it I had to resort to the heartbreaking task of stabbing a tyre with various implements to see how Bat Sealant would cope. I started easy and poked a stout safety pin into the tyre and that didn’t raise any issues at all.
Spurt
Next up was a small Phillips screwdriver, which again led to no loss off air. I upped the stakes with a bradawl and, after some initial spurting it firmly sealed, which was pretty good going.
Then I got serious with a 3mm metal shaft, which refused to seal with the wheel spinning; only by rotating the hole to the bottom and jiggling things about to help did the hole eventually seal. That would be one to fix with a tyre patch or with a tubeless plug.
Slash
Finally it was time for the killer blow – a sidewall slash performed with the Brutus stab of a 10A scalpel. This type of slit is a big ask for any tubeless goo but sometimes, just sometimes there’s a partial clogging, but this wasn’t to be with the Bat sealant.
> Buyer’s guide to tubeless tyres – find out all about new technology rubber
An issue with some latex based sealants is that over time the liquid can evaporate, leaving a solid lump of rubbery sealant that’s unable to do its job and can be felt as a wheel imbalance.
I’m happy to say that, despite the test bike being left standing for various periods, the sealant didn’t transmogrify over time into the dreaded tubeless cuttlefish, and remained sloshing around the tyre when the wheel was finally rotated back into life.
Value
At £6.99 for 125ml this is at the more expensive end of things, especially as there are always discounts to be had for the more popular brands. Stu reviewed and liked the CST Tubeless Tyre Sealant at (these days) £10.30 for 250ml, although it struggled to match its larger-hole sealing claims.
An obvious ‘latex liquid with bits in’ competitor is Stans NoTubes Race Sealant, which comes in a 946ml bottle for £40, or £5 per 125ml (though it’s easily for around £30). It gets cloggy fast enough you can’t even get it through a valve core, but that does mean it does its hole-plugging job well. Obviously buying in bulk will always work out cheaper, though, so Bat is not quite as expensive as it seems – and there’s a 400ml bottle that would surely be better value.
Overall
The tubeless fluid market is quite the minefield: one person’s favourite goop has led to another’s absolute nightmare moment, and I’ve been victim myself, watching a trusted suggestion merrily jizz all over my ankles and bike frame. Real-world use of the Bat Sealant suggests it performs rather well though, and the presence of sharps and thorns still wedged in the tyres shows it did exactly what it was supposed to.
Verdict
Does a good job of sealing holes, but it’s not cheap – or easy to find
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Make and model: Bat Tyre Sealant
Tell us what the product is for and who it’s aimed at. What do the manufacturers say about it? How does that compare to your own feelings about it?
BAT sealant is a white liquid latex sealant designed to rapidly seal tubeless tyres, the rubber latex contains rapid seal technology so punctures seal faster with less sealant. The product is formulated to produce the fastest possible seal and starts sealing immediately the puncture occurs with the rapid seal technology forming a natural rubber plug in the puncture that will last the life of the tyre.
Tell us some more about the technical aspects of the product?
It’s hard to find any technical info on this. It’s hard to find any information at all really. It’s a latex and rubber based sealant with bits in. Funky packaging.
Rate the product for quality of construction:
9/10
Good consistency and easy to get through a valve core.
Rate the product for performance:
8/10
Rate the product for durability:
8/10
Remained liquid inside the tyre instead of turning into a firm ball of latex, as some sealants like to do.
Rate the product for value:
4/10
It’s a bit pricier than other brands in this size; bigger bottles are better value (and more useful).
Tell us how the product performed overall when used for its designed purpose
Sometimes the best thing you can say about a product is nothing, and this is one of those times.
Tell us what you particularly liked about the product
Just works.
Tell us what you particularly disliked about the product
A bit pricey, the small bottle empties fast in bigger tyres and it’s a bit tricky to hunt down.
How does the price compare to that of similar products in the market, including ones recently tested on road.cc?
At £6.99 for 125ml this is at the more expensive end of things, especially as there are always discounts to be had for the more popular brands. Stu liked the CST Tubeless Tyre Sealant at (these days) £10.30 for 250ml, although it struggled to match its larger-hole sealing claims.
An obvious ‘latex liquid with bits in’ competitor is Stans NoTubes Race Sealant, which comes in a 946ml bottle for £40, or £5 per 125ml (though it’s easily for around £30). It gets cloggy fast enough you can’t even get it through a valve core, but that does mean it does its hole-plugging job well. Obviously buying in bulk will always work out cheaper, though, so Bat is not quite as expensive as it seems – and there’s a 400ml bottle that would surely be better value.
Did you enjoy using the product? Yes
Would you consider buying the product? Yes
Would you recommend the product to a friend? I’d offer it up for consideration
Use this box to explain your overall score
BAT Sealant does its job really well. Testing in gravel tyres under an onslaught of hawthorn and flint saw not a single telltale hiss or dribble of sealant, while tyre inspection did reveal embedded thorn remnants. It’s a bit pricier than the competition, harder to find and this small bottle won’t last you long at all though, which count against it.
Age: 50
I usually ride: It varies as to the season. My best bike is: The one I’m on at the time
I’ve been riding for: Over 20 years I ride: Most days I would class myself as: Experienced
I regularly do the following types of riding: road racing, cyclo cross, general fitness riding, fixed/singlespeed, mtb, Fun
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