A replaceable cylindrical item designed to provide wear surface and maintain alignment of a reciprocating valve stem and the like, it may have a flange(s) and/or grooves.
NSN 5945-00-151-4623
NSN 7035-01-285-7413
NSN 6320-01-145-9013
NSN 6105-01-277-6538
NSN 5950-00-984-9885
NSN 5996-00-045-4058
NSN 6650-00-428-7055
NSN 6105-01-509-2872
NSN 2925-00-059-7991
NSN 4140-00-051-3296
NSN 5910-00-062-0955
NSN 5965-00-146-6561