Correct. If you order an Extreme set for a large-bearing application, you get the Set-20 tapered roller bearings with their integrated seal already installed. If you order a small bearing setup, or one of the Heavy Duty axles with the standard large or small roller bearing setups, you order your two axle seals separately.
Most of our axles have the bearings pressed on already. If that's the case, then obviously the retainer is included as well. Usually an aftermarket "C" type retainer that can be removed and installed without removing the bearing.
Just make sure you specify what year your axle is, and what size bearing you need to fit your housing.
If you have a later-build '73, a '74, '75 or '76 housing however, it really never hurts to absolutely verify your brake size, retaining bolt size, and bearing size too. Just to be sure. Way to many changes thereabouts and the possibility of PO changes as well.
You've had yours for awhile though, haven't you jperry? If you have and are comfortable in what you know about it, order away.
And where are you exactly? Reason I ask is that if you're in the South Bay Area or somewhere between Stockton and San Jose, I can bring them with me any Monday and we can meet up for the hand-off.
You can PM me if you're in one of the areas you think we might be able to work it out.
Paul