About 1/2" i.d. x 1-3/8" o.d. x 4mm thick.
Questions welcome, or if you prefer an option not shown, click "Contact seller" at top right.
Please click "See other items" at top right, additional items can ship together when practical.
Thank you for looking and if there's ever a problem I'll be happy to resolve it.
Here is an application list from Babbits.
ASSEMBLIES WHERE 90201-124G7 IS USED