Just throwing out this anecdote from my morning ride today -
I added Orange Seal sealant into my latex tubes about 3 months ago, as I seem to have bad luck with flats here in Norcal, having about 6-7 per year (my friends have like zero). I also swapped to brand new GP5000 tires at that time, so the tires aren’t worn out. I honestly didn’t think it would work that well, as I’m running latex tubes which require 90-100psi compared to the much lower psi of the recommended tubeless setups, and the online anecdotes suggest that sealant doesn’t work well at high psi. But I figured I’d try it what the hey.
Today, am riding alone at 21mph and out of nowhere, a loud “BANG” and a short “whoooosh” that I recognize all too well - definitely the sound of a puncture. There were no other riders around me and no other sounds to confuse it with, and it was quite loud, not subtle at all.
Pulled annoyingly to a stop, and started checking for the source. Amazingly, I couldn’t find it! Both tires felt firm, and I couldn’t find the puncture source at all. Didn’t see any sprayed sealant, either. Didn’t have to top off the psi, just kept riding and got home 40 minutes later without incident, it was like nothing even happened.
Needless to say, I’m sold on this sealant stuff, even if it doesn’t work every time - worked so well this one time that I’ll take it even if it works only half the time! Tonight I’m going to pull out both tubes completely, check the tires for any puncturing debris, and while I’m there, add more sealant to each tube. To put the stuff into the latex tube, I removed the valve core, then used a plastic syringe to inject it in. It does get a little messy on the floor but it’s easy to clean up.
Just my n=1, and I may have just gotten really lucky, but maybe this story will help someone else avoid an annoying flat later as well.