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 5895-01-551-1550
NSN 5855-01-464-5084
NSN 5930-01-503-2920
NSN 5975-01-222-2612
NSN 5895-00-867-0268
NSN 6105-01-642-5645
NSN 7035-01-222-0729
NSN 6145-01-441-4239
NSN 5930-01-281-0045
NSN 5910-01-443-3625
NSN 6105-01-470-3211
NSN 6110-01-118-5084