Power steering gearbox leak

I think the difference between manual and power is the diameter of the shaft. Manual is a larger shaft.

IIRC the input seal I used was 1" OD and .625 or 5/8" ID for the shaft. Seems like I had to order it from Rockauto.

The seal you have does seem like it has a narrow band.
Thanks. I checked rock auto out and they had one listed from skf#6141. I had the local parts store cross reference to the brand they carry, national #7188s. That one has the dimensions you gave, so Hopefully that one will work.