When I first got my trailer I had a brake drag on me... it was on my initial shakedown run. I caught the issue but the hub was pretty warm. So I wanted to see if it heated up the bearing at all. I disassembled it and when reassembling it I damaged the seal. Anyhow, I contacted them and they were able to give me the part numbers. This was from 2017 so they may have changed on newer trailers.
Inner bearing is L68149+L68110
Outer bearing is LM12749 + LM12710
Seal is a redline 168233
https://www.etrailer.com/p-168233.html