Context: 95 Acura Glove compartment handle, latch and key cylinder.
The dark ring pins the arm to the keyed-cylinder. The goal is to remove the cylinder to reveal the 4 digit "key cut code".
What is the name of the beveled-dark-annual retaining ring?
What is the method to remove the ring without damaging it so it may be reused?
Bonus round: What is a different name for the open retaining clip photographed at 2 O'clock
It would be useful to have two different names to differentiate the two retaining rings.
The hope is that experience can help with the second question.
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