dscheidt

no, if you leave the lid of a can off, you end up with a gooey rubbery mess, that's about half the volume of the can. (I used to run a tire shop, I've dealt with that lots. We bought glue in quart or gallon cans, and refilled small cans to work out of. you go through a lot of glue fixing auto, truck, and machine tires.)

I'd believe 1000 patches, if you're careful to apply the glue only where you need it, and thinly. I don't, because I have a can full of fluid and am not going to run out, and putting an extra half inch of glue around the hole is easier, and harder to mess up when you put the patch on. I expect I'll get closer to 300 patches out of the can.