Tyre self sealant

Cr419 said:
On Friday afternoon I found a screw in my rear tyre. Pulled the nail out and waited for the tyre to deflate (was a really big screw). It never did.

Then I remembered when I replaced my front tyres a few months ago it had some kind of goo on the inside, so now I assume the rear tyres must have the same stuff in.

Does anybody here know what that is, and can I trust that it sealed the tyre properly so that it doesn't now go flat after a week or two? If it doesn't go flat in the next week I want to go buy more to add to my front tyres as well as to my wife's car. But now it need to find out what the product is as it seems to work rather well.
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Apologies for the long winded explanation....lol.

Came across this thread yesterday. A friend and I have had a little company selling tyre sealant since university days. We sell to all industries, but primarily for commercial applications. You get 2 types of tyre sealant, which are classified as either emergency use or puncture preventative. The former is for when you have a puncture, it expands like foam, inflates the tyre and seals the puncture. This is designed to be a temporary repair allowing you to get to safety and then have the tyre repaired professionally.

The puncture preventative type is inserted into the tyre before getting a puncture and will automatically seal the puncture when it occurs. The formulation is glycol based and remains in the same consistency for the life of the tyre. It does not come in a can and inflate the tyre when being applied. As Ockie says, it is a liquid that they pump into your tyre. Make sure it is pumped in by someone who knows what they doing as it can offset the balancing on your vehicle. It needs to be measured out in exact milliliters for that profile tyre.

It really is great stuff. Cyclists and 4x4 adventurists have been using sealant for donkeys now.
 
INvertAdD said:
Apologies for the long winded explanation....lol.

Came across this thread yesterday. A friend and I have had a little company selling tyre sealant since university days. We sell to all industries, but primarily for commercial applications. You get 2 types of tyre sealant, which are classified as either emergency use or puncture preventative. The former is for when you have a puncture, it expands like foam, inflates the tyre and seals the puncture. This is designed to be a temporary repair allowing you to get to safety and then have the tyre repaired professionally.

The puncture preventative type is inserted into the tyre before getting a puncture and will automatically seal the puncture when it occurs. The formulation is glycol based and remains in the same consistency for the life of the tyre. It does not come in a can and inflate the tyre when being applied. As Ockie says, it is a liquid that they pump into your tyre. Make sure it is pumped in by someone who knows what they doing as it can offset the balancing on your vehicle. It needs to be measured out in exact milliliters for that profile tyre.

It really is great stuff. Cyclists and 4x4 adventurists have been using sealant for donkeys now.
Click to expand...

I suspect this is what the old tyres had in. Do you know where I can buy more of it? I bought a can of emergency sealant for my wife's car in case of emergency but would like to add this product in both cars in future.
 
Cr419 said:
I suspect this is what the old tyres had in. Do you know where I can buy more of it? I bought a can of emergency sealant for my wife's car in case of emergency but would like to add this product in both cars in future.
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I used to have a can in my bike's seat also in case of emergency. Bike shops stock them. Getting a flat with a bike tyre, there is no spare :D You also get the self inflatable one too. It not just adds the gel, but also inflates the tyre. Wynn's has such a product iirc. Maybe check with Middas, they stock Wynn's goodies.
 
Pitbull said:
I used to have a can in my bike's seat also in case of emergency. Bike shops stock them. Getting a flat with a bike tyre, there is no spare :D You also get the self inflatable one too. It not just adds the gel, but also inflates the tyre. Wynn's has such a product iirc. Maybe check with Middas, they stock Wynn's goodies.
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I have a can of the emergency sealant in the Up actually, I'm looking for that permanent thing.
 
Cr419 said:
I have a can of the emergency sealant in the Up actually, I'm looking for that permanent thing.
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It's the same thing. Some inflate (puncture repair) some don't and only apply the gel to the inside. So when you do get a puncture it's self seals. Just check at your local spares place. They will show you the two different cans. The gel only one normally has a long clear tube so you can see when all the contents went into the tire.
 
Pitbull said:
It's the same thing. Some inflate (puncture repair) some don't and only apply the gel to the inside. So when you do get a puncture it's self seals. Just check at your local spares place. They will show you the two different cans. The gel only one normally has a long clear tube so you can see when all the contents went into the tire.
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That's the one I have, but if it works the same I'll just keep the can in the car in case of emergencies.
 
Cr419 said:
That's the one I have, but if it works the same I'll just keep the can in the car in case of emergencies.
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Just be sure that it self inflates. If not you can put it in the tyre when stuck but not drive anywhere. You need to deflate the tyres, add the sealant and inflate the tyres again. If you have the emergency one that inflates too it does the same, only difference is you only use it when you do have a puncture instead of pre-prepping the tyre.
 
Pitbull said:
Just be sure that it self inflates. If not you can put it in the tyre when stuck but not drive anywhere. You need to deflate the tyres, add the sealant and inflate the tyres again. If you have the emergency one that inflates too it does the same, only difference is you only use it when you do have a puncture instead of pre-prepping the tyre.
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And that is fine for me, but I would ideally want to pre-prep my wife's car so that she does not ever need to do the whole procedure next to the road. Especially with crime levels as they currently are.
 
Quick question. If you have to put the goo into a tyre for a temp fix can that tyre be vulcanised later for a proper fix or does the goo stuff things up?
 
Pitbull said:
I used to have a can in my bike's seat also in case of emergency. Bike shops stock them. Getting a flat with a bike tyre, there is no spare :D You also get the self inflatable one too. It not just adds the gel, but also inflates the tyre. Wynn's has such a product iirc. Maybe check with Middas, they stock Wynn's goodies.
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Is this stuff a permanent fix?
 
Archer said:
Is this stuff a permanent fix?
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Sure, depends on the size of the puncture though. I used to replace the bike tyre once I see the blue on the tire. More a safety precaution than anything else. Don't want a blow out at 200km/h. But I never had any issues with it. It will plug the hole and the ooze on the inside still stays liquid. So you hit another puncture it will seal that too. It really is a great product.
 
Pitbull said:
Sure, depends on the size of the puncture though. I used to replace the bike tyre once I see the blue on the tire. More a safety precaution than anything else. Don't want a blow out at 200km/h. But I never had any issues with it. It will plug the hole and the ooze on the inside still stays liquid. So you hit another puncture it will seal that too. It really is a great product.
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Certainly seems much easier than dealing with those "snotty" things. Just can't find the max hole size it fixes but I guess anything nail sized should be fine. It shall be added to my emergency kit! Thanks
 
Archer said:
Certainly seems much easier than dealing with those "snotty" things. Just can't find the max hole size it fixes but I guess anything nail sized should be fine. It shall be added to my emergency kit! Thanks
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Yeah it ultimately depends on the outside temperate vs viscosity vs hole size on any given day.

It basically needs to move slowly enough for it to start hardening before escaping from the hole completely. If that happens it essentially makes a permanent plug, if not it pisses out.

Which begs the question whether angling it correctly and keeping your finger on the hole would make any difference?
 
SauRoNZA said:
Yeah it ultimately depends on the outside temperate vs viscosity vs hole size on any given day.

It basically needs to move slowly enough for it to start hardening before escaping from the hole completely. If that happens it essentially makes a permanent plug, if not it pisses out.

Which begs the question whether angling it correctly and keeping your finger on the hole would make any difference?
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I never had an issue needing it to seep out or anything. The movement of the tire normally kept the inside pretty coated due to the constant turning. But I do think it will lose it's sealing power after a while. I had it for about a year at a time in the tire and only ever once it didn't work. Hit a bolt as thick as my thumb. Pulled it out and it just blew all the ooze out...
 
Pitbull said:
I never had an issue needing it to seep out or anything. The movement of the tire normally kept the inside pretty coated due to the constant turning. But I do think it will lose it's sealing power after a while. I had it for about a year at a time in the tire and only ever once it didn't work. Hit a bolt as thick as my thumb. Pulled it out and it just blew all the ooze out...
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Yeah that’s what I mean if the hole is too big it will seep out.

If small enough it will seal and harden in the hole.
 
Pitbull said:
I never had an issue needing it to seep out or anything. The movement of the tire normally kept the inside pretty coated due to the constant turning. But I do think it will lose it's sealing power after a while. I had it for about a year at a time in the tire and only ever once it didn't work. Hit a bolt as thick as my thumb. Pulled it out and it just blew all the ooze out...
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I've actually decided against this stuff now... because it will probably make the tyre temperature/pressure monitors stop working
 
Archer said:
I've actually decided against this stuff now... because it will probably make the tyre temperature/pressure monitors stop working
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Yeah and besides on bikes we generally have it a bit easier with repairs than on cars.

I also just wonder if you won’t feel it at low speed moving around.

In theory though it shouldn’t affect the TPMS as that’s a sealed unit isn’t it?
 
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