Drivetrain Transmission output shaft seal

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One like this?

On another note, have you checked the surface of the driveshaft yoke? I know that harmonic dampers can eventually have a groove worn into them from the front seal, I'm curious if there's something like that that may be going on too? There is a sleeve kit that is available for dampers, maybe there's something like that that's available for the driveshaft yoke as well?

And I know some others will ask so I'll get this out of the way - post up some pics of your car and/or anything that's related to this particular subject. Everyone loves to see what everyone else is working on.