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Had a thorn in my tyre last night, the tube has sealant in it, which worked. How long is it likely to last, or should I change/repair the tube as soon as possible. 28 mm almost slick tyres running with 110 psi.
To clarify, the tyre has an innertube that came with sealant already inside the tube. I removed the thorn and the hole sealed, it is still holding pressure. The recommended pressure for the tyre is up to 120 psi.
Hypothetically yes, it will last a while - if a sealant is used in a tube and the tire subsequently gets a puncture, you must remove the penetrating object or it will flex in the tire, continually un-sealing the hole and shredding the tube.
If you believe you completely removed whatever caused the puncture and the sealant plugged the hole and you were able to continue your ride, that's great!
Some steps to further make sure the sealant will hold for future use:
Given enough time, most sealants cease to be active and should be cleaned out; if they solidify, they unbalance the tire with useless weight concentrated in a single spot. On a tire with an inner tube, including a tubular, you’ll need to remove the sealant through the valve, which requires removing the valve core, and ideally rinsing and sucking it out. That is a lot of work if it is a tube in a clincher wheel. So you could always deflate the tire, remove the tube and insert a brand new tube and repeat the steps listed above.
The tube lasted for about 2months with no loss of pressure, then the tyre failed. Have replaced both tyres and innertubes.
The answer to your question is that, if it's leaking air, it can last a little while, but I believe you should have it repaired as soon as possible. I don't have tubeless tires but I have done a ton of research on the matter. There are some kits around to help you if you are new to the subject. Generally, if you think that is is not leaking any air then you are very lucky my friend and do not need to pay any attention.
