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 4140-01-441-0691
NSN 6135-01-581-8163
NSN 4140-01-422-3102
NSN 6150-01-261-7945
NSN 5990-01-417-4402
NSN 6240-01-387-0904
NSN 6105-00-303-4252
NSN 6645-01-495-0939
NSN 6320-01-349-5515
NSN 6150-01-231-4610
NSN 6240-01-488-3094
NSN 4140-01-608-4073