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 4140-01-353-5031
NSN 6130-01-361-5171
NSN 6645-00-547-4388
NSN 6620-01-388-8955
NSN 5915-01-148-4899
NSN 2925-00-891-5959
NSN 5999-00-407-7118
NSN 5998-00-596-9568
NSN 6105-00-111-2546
NSN 5990-00-504-9009
NSN 5985-01-411-6502
NSN 4140-01-105-3036