I’m in Arizona & we had “State Seal Co”. I bought all kinds of outboard seals by micrometer matching. Sad o say they got too big & don’t have time to sell 3 or 4 at a time anymore. If your lucky look locally for a bearing & seal shop locally. I bought many bearings there for sugical table repairs too as the table factory wanted too much money. Also check a hydraulic cycinder rebuild supply. I found seals there for a very old surgical table & doctor who was “married” to an older table & couldn’t use a modern table. They are weird too!!