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About 15K miles ago I had a wheel bearing failure. I replaced the hub and bearings and put in a new seal. A few days ago I noticed it was leaking again, pretty badly, so I put in a new seal. Then I got to wondering if I was doing something wrong and that's why the first one failed. I know you are supposed to pack the bearings because the hub will be dry of oil for a while but are you supposed to do anything about the seal being dry? I put grease on it where it slides onto the shaft but, if I understand this seal, the part that rotates is in the middle, it does not rotate on the shaft. Are you supposed to somehow oil it up?