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 6240-01-502-7883
NSN 6105-01-114-2060
NSN 5855-01-579-0062
NSN 7035-00-517-8232
NSN 5975-00-905-5194
NSN 5930-01-608-4988
NSN 5985-01-279-0066
NSN 5960-01-632-6576
NSN 5915-00-391-0163
NSN 5965-00-243-7782
NSN 5960-01-023-8037
NSN 5855-00-586-6255