Ken,
Hang in there. I'm awaiting a phone call, and when it comes in I'll see if I can get the Prevost and Chicago Rawhide number, from which you can cross to any seal manufacturer.
You ought to replace it yourself. The first time you do it it will seem like a big deal, but from that point on it gets easier because you know the steps. The only thing that I could think of that will make you frustrated will be the flat head screws that hold the brake drum to the hub. They are a pain to break free. If you intend to do your own work this is a good place to start.
Make Ellen do the lifting. That brake drum weighs more than JDUB's wallet.
