Thank you Mikes and Rodd.
Rodd, yes part #93 is listed as a radial seal ring. I thought because it is an external seal I could possibly do it in-situ but I guess not.
Michael, did you replace the pump yourself?
Is there some way to determine if I have a straight shaft or conical shaft without removing the pump first? My car is an October '66 build, about 1000 before the last 230SL.
Lastly, can I remove the pump without removing the radiator? It looks tight but I am hoping so.