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 5996-01-268-6792
NSN 6610-00-010-9714
NSN 5935-01-302-5796
NSN 5996-01-409-1860
NSN 6220-01-225-6734
NSN 6130-01-285-7350
NSN 6105-00-471-3265
NSN 5998-00-850-0398
NSN 6220-01-197-7680
NSN 6130-01-078-1123
NSN 6130-01-004-5175
NSN 6110-01-245-3059