OK, Jim, two questions:
1. I'm under the impression that
a) "sealed bearing" just means a cup-and-cone setup with some sort of wiping (rubber) seal, and
b) what you've pictured above, a bearing that can't have balls disassembled from races without destroying it, even though the seal may be removable, is a cartridge bearing.

Am I wrong about that? Is a cartridge bearing one where the seal can't be removed?

2. Do you dry out a hub that you clean that way completely before relubricating? Maybe in the oven at 130 degrees F (hard to do with a wheel, but a light bulb or careful heating with a hair dryer might help).