The bearing is a hub assembly. I read all the suggestions saying it can’t be the bearing cause it’s sealed. Anyway, bought a hub on eBay (included wheel sensor) and problem solved after messing with the o-ring several times. The seal must leak and axle lube comes thru the bearing. When I looked closely at the fresh lube leak I could see it was coming from the bearing and not the o-ring. Not saying it’s your problem but it’s something to consider. Good luck

 

Thank you - I'll definitely keep it in mind. I'll begin just by replacing the o-ring and seeing if I just wasted money on brake pads. Crossing my fingers here.