1. It will be virtually impossible for you to get the part (bezel or dial) from rolex and have it installed on your sea dweller. The reason for this is that they will require you to send in the watch for any replacement parts, service, requests etc. As such, I do not belive that your request would be honored since they would not mix different registred dials and bezels from one model to another.

2. If you can obtain a dial or a bezel from gray market, then an experineced watchmaker could do the job for you. Both watches have same dimensions and diameter. However, finding these parts is almost as impossible as the first option.

I had a two tone rolex daytona for which I wanted a dial that only was provided with the all gold model. After contacting rolex, my watchmaker, and doing a search for the parts....no luck. so I feel your pain. But then again, you may want to contact them yourself.