Thread: Tubeless Tyre 'O' Ring Bead Sealer

Hmm wrote a reply but phone issues. Retrying...

What does this thing do exactly?

If it's just to put the tyre on the rim at home, an air compressor with a tank should be able to push enough air in to seal it. Just can't use a small tankless compressor. Lube to assist while using tyre lever? Detergent and water in a spray bottle.

Think this is what is being referred to

Tyre Doughnut Products/Tyres; Tubes; Valve Caps;Tyre Guages etc.. The Hell Team - Trials bikes

Thought these were only for bike tyres.

I have seen a 16 inch bmx bike tube used to do this.


I have one in with my R&R beadbreaker

I use a bike tube and hand soap.

Ok occasionally I use a bike tube and hand soap normally I spray it with are o start and flick in a match while standing behind something robust or someone I don't like (usually some d3/4 owner whose spent the entire repair bitching about me not being able to do the repair with tyre pliers)

Always had trouble getting 'hard-walled' 750x16's to initially seal on the rim when used tubeless.
I had a couple changed in Brisbane and they used a "Bead-Sealer" which, installed on the rim between it and the tyre, forced the air into the tyre, not letting it escape round the edges (this is why its almost impossible to pump up a new 'tubeless' tyre with a hand/12v pump in the bush)
I can see that a 16" BMX tube (well greased!) would do the trick but I've been told that they often get trapped at the rim by the inflating tyre.
I managed to find a supplier (R & G Tyre Supplies, 59 Hickory St, Marsden Qld 4132) It cost $70.
Up in Cooktown the local tyre mob use a "Bead Air Blaster" but it can take 1/2 a doz tries to get the air trapped, these things worked first go AND should work with my 12v inflator at Warakurna and Gibb River!!
I've used "Tyre Pliers" to break the bead for 20 years, worth their weight in gold!!

Originally Posted by dick180641

Does anyone know where I can get a "TYRE DOUGHNUT" to seal the bead of a tubeless tyre onto the rim when mounting it?

I also need some 'spray-on' tyre lubrication.

Many thanks, Dick R

Hi Dick,
I have tried using a 16" bike inner tube to prevent air from escaping between the rim and tyre-bead as you inflate. And I had difficulty getting the bike tube out quickly enough once the vehicle-tyre bead starts to move into place. Must admit - I did not apply lubricant to it, and that would probably help. I had not seen the "tyre doughnut" before: it looks like a good idea, provided you can readily get it out under the same conditions.
On the subject of lubrication, REMA Tip-Top make tyre-mounting paste specially for this job. It is claimed to be more slippery than either soap or detergent, and has the advantage that it won't cause rust on steel rims, because it does not contain water.
Cheers, Andrew Milne

Thanks Andrew, the proper "BeadSeater" is quite solid and the inflating tyre just 'pops' it off the rim (fairly violently, by the way!), its solid enough not to get trapped.
I also got some stuff "SUPER SLICK-UM" to anoint the ring with (and the rim and bead)

Don't forget the old ratchet strap around the center circumference of the tyre trick and ratchet it up tight (or rope with truckies knot to get it tight) which does mostly work towards getting a good start with the seal when your stuck with a low volume air pump in the middle of nowhere.