Nissan Repair: oil seals, output shaft, input shaft

Question
I am trying to replace the oil seal at the rear of the transmission/transfer case on a 1987 hardbody 4 wheel drive pickup.  This is the transmission that has the transfer case built into it.
The numbers on the seal are:  42 66 10  I know these are the metric dimensions of the seal.
My problem is that none of the auto parts stores in my area (Schucks, Napa, Baxter) can find this seal in their catalogs. Is there some part number than can help them find the seal?

thanks in advance.....Harry

Answer
Hi Harry -

Try these numbers from Timken -

I don't know what kind of transfer case you have -



For the TY10

710121 - rear output shaft
710120 - input shaft
710243 - selector shaft
225210 - front output shaft

For the TX10A

224266 - rear output shaft
225030 - input shaft
710113 - front output shaft
221710 - selector shaft


I hope this helps -
aloha
calvin