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 6145-00-191-8805
NSN 6150-00-827-4861
NSN 5895-00-200-7114
NSN 6220-01-384-5297
NSN 5905-01-563-2247
NSN 6320-01-397-9995
NSN 6220-00-970-3797
NSN 4140-00-111-3247
NSN 5965-00-431-2492
NSN 6220-00-964-1042
NSN 5998-00-182-7130
NSN 5835-01-152-9483