8&3/4 axle fitment problem

the inner thick seal that is in the housing. how far should it be driven in? Dana I think I have a spray can of the right diameter (not the best contact area but seemed to work on this one). Let me check the dia of the can I think I used. RR
I always use a large socket and extension as driver.. should bottom out on axle tube inner lip, reach your pinky in to check if its fully seated.