here is a link with some info about those type hubs-
click as for the seals, take a old one to a bearing house in your neighborhood.. or someone like them and they can measure it and replace it..
woops just saw you are in WF..take it to Wichita Bearing on Indiana and Larry can fix you up...

_________________________

We can't all be heroes because somebody has to
sit on the curb and clap as they go by.
--- Will Rogers