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 6240-01-292-2229
NSN 5985-01-487-4053
NSN 5985-01-562-9337
NSN 5965-00-263-6436
NSN 6105-00-891-9768
NSN 6685-00-246-5349
NSN 5985-01-419-3502
NSN 5855-00-149-0766
NSN 5965-00-798-3597
NSN 6685-01-612-6925
NSN 5920-00-298-0700
NSN 6110-00-770-5845