CALIFORNIA WARNING: This product can expose you to chemicals, including lead and DEHP, which are known to the State of California to cause cancer and birth defects, or other reproductive harm. For more information, go to https://www.p65warnings.ca.gov.
Post O-ring rubber used on steel and plastic single posts and standoffs.
Measures .1875 inch (4.763 mm) inner diameter with 7/32 inch (.21875 in) (5.556 mm) cross section diameter.
Durometer rating is 40.
Reference:
Bally: 17-41-641
Jersey Jack Pinball (JJP): 25-006003-03-09
Marco: 38-0316
Midway: 0017-00041-0641
Sega / Stern / Data East: 545-5025-01 and 545-5348-51
Williams: 23-6641-1 and 2A-3905
Wico: 19-2040