I fixed a friend's UST tubeless tire with super glue once. I put a drop or two of glue on the outside of the tire, on and around the puncture, and it held fine (and believe me, this particular friend would have let me know about it if it had leaked later). We were in a hurry to get to the trailhead, and I figured the super glue was worth a try.........But this tire was usually run at 30-35 psi, and it was a tire, not a tube. I agree with everyone else, for repairing a tube, it's not a good idea and it probably wouldn't work.........And FWIW, for tubeless tires, Stan's sealant or something similar (which my friend was not using) is the way to go; I've never had a flat when using the stuff-