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RE: eBike Explorations, Volume 7: Flat Tire??
Yes, that's how it works. There are 2 layers to the inner tube, with a sticky green slime between them. There's lots of little bits of rubber in the slime. When a puncture occurs, the slime is pushed through the hole and the bits of rubber clog the hole. The slime then dries wherever it is exposed to air, like a glue.