Questions and Answers for J-B Weld WaterWeld 2 oz. Epoxy Putty Stick (Case of 6)

No. The barrel is polypropylene. Look to methyl-methacrylate for this

If the water is lower than the lights you can but not if full

It can used underwater after cured but will not adhere to a wet surface

Yes, this epoxy can even bond underwater when consistent pressure is applied until fully set.

This is good to 225F

Ye it does. Be sure to sand the PVC to add grip

Yes, the tape can work for this but may need to be replaced periodically due to the chemicals in the mix

Water weld 8277 is NSF certified after a full cure.

This is not that easy to sand but can be cut to trim but can be painted.