Aquaseal is an amazingly effective glue for vinyl. I have fish collecting nets that are more than three decades old made from clear vinyl, with all seams aquasealed. The bottoms are made from plastic window screening. The window screening is coming apart on these older nets, except for the sections embedded in aquaseal, which has yellowed, but is still virtually unbreakable. I assume we are talking about polyurethane. I doubt the stuff will stand the stress of constant flexing, though. Without the accelerant 24 to 36 hours is absolutely required. I have no confidence in the product when those accelerants are used.