[Oldsguy]

That seal is pressed in, I doubt you will be able to remove it without removing the cover, or install the new one for that matter. That is something the Chevy guys always rib me about (only thing??) the cover isn't two piece like theirs so that job neccesitates the full removal of the cover, and the water pump. But you are already halfway there by the time you get the balancer off anyways so....