OKO Magic Milk Fibre Sealant

Seen a few different sealants at the Cycle Show at the NEC, one was by a brand called MaXalami, that actually had on the bottle that it was made by OKO, there was also identical looking stuff in an identical bottle by Halo, which also looks the same as the UberBike stuff and has the same bottle.
Also been told that OKO (used) to make Peaty's sealant and make MucOff sealant.
I know that doesn't answer your question, but the UberBike stuff and Peaty's is shite!

Had really good results and longevity with cafe latex sealant.

Ah, ok. It doesn't sound too promising, I'll probably pay a bit more for something proven to work.

Cheers.

I used OKO's off road sealant for a while, diluted 2:1 with water, and it works ok. It takes longer to seal at first but once it's sealed it stays sealed. This was the stuff-

https://www.ebay.co.uk/p/OKO-Tyre-Sealer-Sealant-Puncture-off-Road-Anti-Stop-Punctures-1250ml/1712679168?iid=292879209161&chn=ps

When it dries up in the tyre you can just re-wet it with water to make it work again, which is nice. I rescued my back tyre at Northern Grip a couple of years ago doing that.

When it dries up in the tyre you can just re-wet it with water to make it work again, which is nice. I rescued my back tyre at Northern Grip a couple of years ago doing that.

That's interesting, I use it as you do and notice that what escapes around the tyre bead is very water. It's the first time I've run a bike tubeless so I've nothing to compare it with and given an average puncture rate of around 1 a year before hand it's hard to know if it's working or just had nothing to do. I guess it must be sealing around the bead though as something comes out but the tyres stay inflated.

Try the Barbieri Anti-puncture Sealant from planetX instead - only £9/litre. I've been using it and the only time it let me down was when I'd not topped it up for ages

Interesting, I never knew that about the original OKO sealant.

I'll take a look at the Barbieri sealant too.

Cheers

I’m using this exact sealant (the OKO high fibre) having bought a litre when Brant mailshotted it before Christmas.

I’d echo that it seems to take a little longer than Stans to seal initially when set up in the same way, but once sealed it’s spot on. No problems found yet (unless you need to put a wheel together and ride immediately- although with faith this might actually have resolved the problem)

That's sounding a bit more encouraging. The OKO high fibre sealant is currently £5 for 500ml or £8 for a litre. I don't mind a longer period to seal initially, so long as it works.

They claim it works at high and low pressures, which interested me as I've got some gravel king sk tyres to fit too.

I may try it as I am getting the tape and valves from there too. If it is rubbish I'll buy something else.

The re-wetting with water thing was discovered by accident, we were at Northern Grip a couple of years ago and I got a puncture in my back tyre in Lee Quarry. Rolled back to the car to stick a tube in and noticed the sealant had dried up to a claggy goop in the heat over time (it had been warm and dry for ages) so decided to bung some water in to try and make it runny again (nothing ventured, nothing gained- the wheel was out and the tyre was nearly off to stick a tyre in anyway) and it worked. Tyre back on, air in, tyre stayed up and the puncture sealed- woo hoo! You do have to mix it back through though, it won't just dilute down of its own free will.

edit- that was ghetto tubeless with a split 20" tube on 26" rims.

Sets up and seals fine in the couple of wheels I've used it on so far.

Though I had an odd one a couple of weeks ago, in that I had a hole that was big enough to leak air quite fast, but seemed too small or narrow for the fibres in the sealant to get into and block.

Had to ream out the hole quite a lot (with the little tool you get in the weldtite kit) and then it started working.

Watered-down OKO Off Road is OK if you're lucky enough to have a perfect seal between your tubeless ready bead and rim - but if it's not, like most cases, you want a latex milk to help the sealing and to fill any porous holes in the sidewall. It's also lighter, if you're weight-conscious. OKO Magic Milk Hi-Fibre can be watered down if you have any trouble with the initial seal. Can't do that with Stan's and the other natural latex products.

SCOTT-SRAM MTB Racing Team, Switzerland
Led by the World Champion Nino Schurter who has won the 2019 Cape Epic, this top team has been testing Magic Milk Hi-Fibre for a year: and now we are allowed to announce that we are their chosen sealant partner (replacing Stan’s). After the Epic, head mechanic Yanick ‘The Mechanic’ Gyer wrote:
“THANK YOU for your support. As you have seen we had an awesome time at and around the Cape Epic with great victories.

In a total of 6 athletes riding at Epic (8 days, 630 Kilometers & 16650 altitude meters) we had 5 flats. 3 pinch-flats and 2 cuts, in my eyes a very good statistic.
What I liked the most was the super handy handling of cleaning the tires from the inside with just water after using the tires. And also there was almost no bonding of the valve inserts.

I’m very happy and a huge fan of your product.”

Thanks all. Seeing as this thread has been resurrected I'll add that I bought a litre and am currently using it on my 27.5 plus setup.

It is very thick, and I've not punctured yet but the above quote from Brant is reassuring.

I've got a bottle and used it a few times and no issues with any of the tyres I've used it in.

Biggest advantage with the OKO stuff in my opinion is it doesn’t make my hands itch. Much easier to clean up than Latex based stuff too.

What's the approximate top-up frequency of the hi fibre milk?
what are people's experiences of hi fiber vs the old 2:1 tractor mix?
Also, I was thinking about using it in tubed road tyres, anyone tried that?

Bit of a resurrection on this.
Used the high fibre stuff on my recent tubeless setup.
Seems to be ok, tyres went up and stayed up.
Not tried them on the trails yet though.
Planet-X/On-One are still knocking it out for £8/litre.
https://www.planetx.co.uk/i/q/WSOKOMMHF/oko-magic-milk-hi-fibre-tyre-sealant

I ended up buying this after starting this thread and it's been in the tyres for a few months. I've not ridden the bike that much due to work and recovering from a cracked rib but I can still hear sealant sloshing around in the tyres so it's not dried out yet. No complaints from me so far.

I've been using magic milk for a while now and it seems ok - cheapish, doesn't dry out too quickly, seems to seal ok as I've pulled a few large thorns out and there are other spots of latex in the outside occasionally. I've also fixed one larger puncture with a bacon strip plug and it's holding air fine.
Two questions - there always seems to be some residue on the outside of the tyre where it's sealed, is this normal?
Also, do we consider plugs a permanent or temp fix? I thought maybe stick some shoe goo on the outside of it to make it a bit more solid?

The anchovy plugs aren't really permanent but tbh, they can still last the life of the tyre. Personally, I remove them and replace with a mushroom plug- the sort that fits from the inside, those are 100% permanent, it's really just for peace of mind. Looks nicer too 🙂

Pretty normal to get a bit of residue, if you mean the sealant? Some will get out before it seals and that's mostly what you see.

Planet X/On One are selling it cheaply

Bound to be shite then!

By residue I mean future seepage from the places that have sealed, if that makes sense?

I think OKO is the original sealant producer, making it for tractor tyres originally. They've been going 42 years! So they must be doing something right!

I've been using it and it seems to work fine, tyres went up ok, one was a bit of a fight but once it started to seal it was fine. With other sealants I usually notice air loss between rides, the OKO stuff does seem to be better at holding air in the tyre. I've not had any tyres cuts yet, so not sure how well it'll cope when that happens. It's usually tube time by that point anyway.

Been using the high fibre stuff for about 18 months.
No issues so far.

No issues with it.
I also use OKO agricultural which I mix with stans to add some fibre into it. Use this mix for the road bikes also as the fibre will work with the high PSI.

Been using the hi fibre stuff for a while with no issues, what I like about it is that if you swap tyres you can rinse all the residue out with water, unlike Stans.

Oh yeah, meant to say, I got some of this after a positive review a while back and it seems good to me. Much the same as stans when it goes in, seems to last better, can't really judge it as a sealant other than that it works at least adequately.

duckers
Free Member

By residue I mean future seepage from the places that have sealed, if that makes sense?

Ah right. Well, ideally it shouldn't but it does happen sometimes, nothing to worry about as long as the tyre's staying up really.

Ah that's good to know, thanks!
I've got a plan that when the tyre is ready to be replaced I'll top it up and take a screwdriver to it just to see how good it actually is.

I've been using the planet X stuff for a couple of years now. It was cheap and I was fed up shelling out lots of money for Stan's, Orange seal and Caffe latex that dried inside a couple of months.

It's thicker than the latex style sealants and requires more grace during initial set up, since it takes a bit longer to coat everything, but once that's done it doesn't dry out for ages and seems to be more effective at sealing.

Prefer it tbh.

I did buy this in the end and I've no complaints with it. I've not punctured much so I've not really given it much of a test but it has sealed small leaks on initial setup and small thorn punctures easily.

It was cheaper direct from them on eBay than from planet x when I got some

The OKO eBay store is selling 2L of this sealant for £20 at moment:

https://www.ebay.co.uk/itm/324138578388?

Good deal that 👍