This nylon sleeve is used on Williams post- 1980, Bally post- 1988, Stern post- 1999, Data East, and Sega flipper assemblies.
This is the standard flipper coil sleeve replacement for all newer pinball machines.
The least expensive way to perk up your sluggish machine is to replace all of your coil sleeves.

Reference part numbers:
Williams/Bally 03-7066-5.
Stern/Sega/Data East 545-5388-00.
American Pinball reference #PLS0047-00.
Jersey Jack Pinball reference #30-000014-35.