So, to the question at hand, sounds like a seal installer to me.
Close, you have the idea. You must KSS!
Here is a pic from over ten years back...
Notice the needle bearing in the spindle. The other side I already had out, it doesn't look as sad. I have tried using many different things to remove these darn little needle bearings. One of the best MacGyver rigs included battery terminal puller parts and a big punch. Bought a Harbor Freight three jaw puller, broke that on it's first attempt.
So a solution came to mind recently.
One 5/8 - 11 X 8 bolt, $2.47 + Two 5/8 - nuts, $0.20 + Four 5/8 grade 8 washers, $2.08 = $4.75, $0.33 tax (to add to the Indiana surplus while not fixing the roads) Total $5.08 not counting the little bit of JB Weld holding the one nut to the bolt.
Don't ya wanna know how it works?
Put the two cut up washers under the needle bearing.
Then slide in the bolt along with turned down washer that fits inside of the spindle bore.
Actually this is spare spindle that has been laying around for years and the needle bearing would not need to be replace if it were cleaned up then greased.
Add the washer turned down to fit inside of the needle bearing, tighten the nut and it is ready to put into the shop press. That is the way that I do it, you could just beat on it with a big hammer for the same result.
More fun later...