I have a Jacuzzi J-145 Hot Tub. Over the winter in sub zero days, we lost power for a few hours. It kicked off the outdoor breaker and I didn't realize it until 4 days later. The tub was frozen. I drained it at -5. It's finally warm enough to refill to see if any damage. I put some water in and noticed on the pump AFTER the heater the outgoing union is leaking about a drip per second maybe quicker with more water in tub. I loosened and retightened. Still drips. The union has a recessed O ring that I imagine is supposed to stop the water when the 2 piped are pressed up against each other. My question: Anyone have experience with a fix for this? I believe I can just buy an Oring or by the union...which the union I am guessing would be a challenge getting free from the rest of the pipe do to the blue glue. Thank you in advance for your advice.