Hmm. That might, and probably will, allow the joint to move at some time in the future H. It's basically rubber based, being a sort of 'liquid rubber', designed to bond rubber, such as patching tyre inner tubes. great for that, as it becomes part of the surface, but not so good on plastics, which need the chemical action of cement. Even 'superglue', which we all use, can fail after time, if stressed, as it doesn't weld the plastic surfaces together. Of course, superglue is used in a different way, so shouldn't be a problem in 99% of cases.