Here is a Data East nylon flipper assembly bushing.
Many of the older ones found on Data East will be Blue in color.
This fits all Data East, and Sega up to, and including Baywatch.
Fits modern Stern stating with Roller Coaster Tycoon
Unless you drop the flipper assembly from the playfield, it’s very difficult to tell if the bushing is worn or damaged.
If your rebuilding well used flippers, always a good idea to change this part.
Data East / Sega / Stern: 545-5070-00