96 xj sport. are there any stock outer seals other than the plastic slinger
on the front axle?

Yes, they are inboard up near the differential. You can't change them from the outside.

so there are two seals per axle?

2 inner on the front. 2 outer on the back.

this is other than the slinger? to be clear. special tools? 3ft length of
1.5in pipe?

If you have a Dana 30 axle up front, and you should, you will see this:







Then with a big pipe you can knock it out from the outside. There is a curbed metal lip to the seal in the inside of the axle tube - you push against it to knock out the whole thing:



You can see the edge of the pipe I used and the old seal at the bottom.

Some guys connect long socket extensions to drive in the new seal from the outside of the axle tubes. I could not make it work, so I went to HD and rigged up a press from the plumbing aisle and fastener aisle.

I used a 1/2 stub - can't remember how long, 1 foot I think, to span the two sides. Can't be too long or else you will have a hard time getting it out when seals a pressed. Then I got some big washers and nuts. On one end is part of a 2 inch PVC threaded union I found that fit the size of the solid axle opposite the seal you are driving - you want this to be big enough to go around the other seal so it can hold in place without doing damage to the seal on that side.

On the other end is a large socket that fits nicely on the solid parts of the new seal. Then you just turn the nuts to drive it in.

Alloy USA makes outer seals. Not to keep oil in, but to keep water,debris,mud out of axle tubes where it will settle on bottom of tube, and can contaminate inner oil seal.

thanks. that looks like the way to go for this shade tree.

When you buy the inner seals, take one to the hardware store and buy 4' of PVC that is small enough to slip through the center opening. Then you can run the PVC through the axle and into the 36m socket that you used for the hub nut and hammer them into place.