Tudor Sub - everyday wear / pressure testing

[In-Cog-Neeto]

Hi all

Trying to understand the difficulties with wearing an old Tudor sub as a daily. Likely to get a bit wet etc.

If pressure testing an old watch, are the likely points of seal loss to be around the crown / crystal / case back, and if found to be leaky, is it fairly easy to have the watch sealed up like new without having to change more than the seals? I wouldn’t want to remove original parts

Thanks