Od 4.1 millimeters
A nonmetallic circular item with an aperature, having a solid round cross-section. They are used primarily for sealing. For items with other than round cross section, see packing,preformed. For noncircular items with a round cross-section, see seal,nonmetallic round section and rubber,round section.
NSN 5996-01-025-5683
NSN 5935-00-534-7556
NSN 5945-01-481-4293
NSN 6145-01-631-9117
NSN 6650-01-433-3520
NSN 6150-01-575-8558
NSN 4140-00-000-0082
NSN 5975-01-616-2938
NSN 6220-01-483-0774
NSN 5920-01-604-9045
NSN 5895-00-882-8855
NSN 7035-01-204-9851