Front hub, rear bearing questions

[Chris H]

Hi Fellas,
I am in the process of ordering the parts to reinstall my new brake components. While in the process of ordering parts, I see in Bratton's catalog that there is a front hub grease seal that is supposed to be driven into the hub. This dust seal has no seal in it, just a cup. What I find on my car is a cup that is tight on the base of the spindle. (See attached photo.) This is the way I found it, on both sides. Is this cup supposed to be here? Should I order the drive in dust seals and use them? Les Andrew's book makes no mention of them. I am confused.
My second question is in regards to the rear hub bearings. While cleaning up the bearings, I noticed that one of the bearing rollers is shorter than the others. (See attached photo.) The roller does not appear to be worn, as there are chamfers on both ends of the roller, just like the others. Is this normal? Should I use the bearing?
As always, thanks for the help.

Chris