and i was probably wrong - i looked at an exploded view of YJ D30 and there is no inner seal so i'm lost.
this is annoying, i found a writeup that also mentions 2 seals on the pass side
and the manual is fairly vague when it comes to the seal replacement on the diff housing.
EDIT: this is a good writeup, also has some P/Ns for the seals (and seems that like it's been said some have 1 seal and some have 2)
http://www.stu-offroad.com/axle/yjd30convert/yjconvert-1.htm[...]
The Warn part numbers are:
Inner seal - 37897
Outer seal - 60006
Block off plate - 39147
Note from Stu: I pulled these part numbers off of a reliable forum, however, I've not verified them:
Inner seal - Chicago Rawhide CR11343
Outer seal - Spicer 46470
[...]
Update: 02/02/2007
Here are some part numbers to the seal that fits in the passenger side of the axle tube right at the differential. Please bear in mind that I used the seal that Warn sent and haven't ordered a seal using these numbers. They were kindly provided to me by other guys who have emailed me after they did the axle shaft swap.
Chicago Rawhide Part No: CR-11343
National Part No: 471763
Quadratec Part No: 52420.12