help needed with 904

Okay here's my next hick up....
Okay I'll shoot a picture of these sealing rings. The two on the top are the ones I took off the smaller one would be the very first sealing ring that goes on the input shaft the smaller one and the larger one is the next ring down from that. you can see on the right the rings match up well. Now the small Rings you can see I have two there that are the same size and diameter and blah blah blah but they're not the same locking style like the two on the right.
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