I'm having to go back into my «game tester» mindset, and the closest thing I can think of is that it's either that black rubber piece on the front of the system that keeps dust out and discs stabilized, or.... (thedreadpirateguy.com)
A small rubber piece from thecupholder came off, and a round rubber part from who knows where shot out of the dash and landed near the handbrake. (articles.orlandosentinel.com)
Jeanne Silverthorne is known for her assemblages of cast rubber pieces of mundane objects that reflect a deep awareness of art history. (wavehill.org)