re: Trailer Bearing/Hub question

I have never experienced something so needlessly complicated as buying parts for a trailer. It's like some of those companies came up with their own units of measurement.

Yes, I would take it to a trailer shop and have them suggest a more permanent solution, though the inner seals throwing grease isn't the end of the world. It actually allows grease to pass all the way through the hub, and its very common because bearing buddies put extra pressure on the inside seal. If it's not double lipped, cleaned perfectly, and exactly the right size it will leak, but leaking out is better than leaking in.