Test post for misc items

 

What does this rubber ring "do"? There is one on each side of the Record Magazine. What purpose does it serve, and/or what does it (they) do?

 

 

Picture of a partially-assembled Magazine Assembly. Note there is another rubber ring located on the INSIDE the Magazine which serves as a "landing spot", or "edge protector", of the installed records. Note also that I have NOT applied the "perimeter ring" (top picture) to the Magazine Assembly at this point.