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 5945-01-604-2229
NSN 6610-00-442-1537
NSN 6220-01-214-7639
NSN 6610-01-425-1523
NSN 5975-01-561-7340
NSN 5855-01-100-3272
NSN 6320-00-908-6841
NSN 5920-00-248-8896
NSN 5945-01-393-9746
NSN 6110-01-541-1828
NSN 6220-00-222-5663
NSN 5920-01-025-6989