How hard is it to restore the water resistance?
I have a Pixel 3 XL a family member broke the screen on, so I bought a donor phone to get the screen and got the phone going and it worked out well (outside of ripping the matched camera on one side, and fingerprint reader but since I was working with a donor device heh), didn't even have to recalibrate the finger sensor because I reset it and never touched it until I could confirm it works. They didn't want it back, so free phone (well, outside of needing to buy a parts phone).
Is it possible to restore the water resistance reliably on these, or should I consign myself to no water resistance and just seal it well enough to close (but be serviceable) once I replace the battery? The battery I put in was bent in (pulled from the donor) removal a little, but it worked for testing.