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 5905-01-640-6423
NSN 5960-01-436-0349
NSN 5975-01-062-0960
NSN 6135-01-442-7275
NSN 5965-00-644-0339
NSN 6610-01-256-7938
NSN 6105-01-145-2681
NSN 5950-01-471-4522
NSN 2925-01-076-6128
NSN 2925-00-404-6461
NSN 5950-00-697-2608
NSN 5999-01-501-7740