Chainsaw Repair

I got the new seal in and pulled the old one out of the 3500.
There is not going to work because I measured the shaft size wrong. 
There was another step in the shaft I did not see until I got the worm gear off.
I believe I could have made this seal work if it was not for the shaft size being wrong.

The size should be as follows.
Diameter 1.380
Width.      .190 but I measured the case and a seal as wide as .220 would work.
Shaft.       .590

The seal I pulled out of the 3500 also had a number on it.
NOK  UDO 421E
MADE IN SINGAPORE.
Sorry if you come up with another that might work let me know and I will give it a go.

Searched the Timken catalog again.  Found a seal that matches the bore and shaft diameters, but it's too wide at .276"

Did some maths and figured out that the new correct shaft diameter is right about 15mm.  Off to the metric charts to find a match.  Need to find one with a 35mm OD, 15mm shaft diameter, and 4.8mm width.  BRB...