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 6645-01-291-4175
NSN 5930-01-100-2682
NSN 5835-01-234-7039
NSN 6220-01-629-0190
NSN 6645-01-091-0009
NSN 6135-01-495-0933
NSN 2925-01-560-3982
NSN 5930-01-591-6213
NSN 5975-01-369-6960
NSN 5905-01-428-2916
NSN 5950-01-122-0527
NSN 5835-00-217-2147