I think I’m looking for contact seals on the external with open seals on the internal side
Those do exist, but it's much easier to get 2RS and they''ll be fine. If you're bothered, you can use a pick to remove the unwanted seal. All the major Euro and Japanese brands are good (SKF, FAG, NSK, NTN)
Need to replace some hub bearings: 6802 and 6902.
What is approved? I think I’m looking for contact seals on the external with open seals on the internal side.