So, the general 5 star hubs have seals in them! So far the only one I've been able to decipher is the rear wheel sprocket side one, which is 17x32x6, and unavailable anywhere.
Anyone have an idea on where to get replacements? I'm going to replace the bearings on these wheels so several of them will have to come out. They're probably not necessary, but if I can get new ones, why not replace them?