I suddenly find myself with a slew of 1983 - 1984 Specialized bikes (Expedition, Sequoia, and Stumpjumper "Sport") with "sealed bearing" hubs and bottom brackets. I haven't had a chance to open any of these up for inspection, but wondered if anyone knows offhand whether these are actual sealed bearing races or simply traditional bearings with a sort of rubber "dust seal" cap to help keep them clean? Thanks in advance!

The bottom brackets are not the cartridge bearing type but the hubs are, from about '84 on at least. IIRC.