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 4140-01-173-6697
NSN 6610-01-555-8596
NSN 6650-01-520-8701
NSN 5985-01-281-0320
NSN 6620-01-195-2095
NSN 5990-01-517-1909
NSN 6130-00-448-2911
NSN 6645-01-479-4683
NSN 5996-01-032-5926
NSN 5965-01-141-6485
NSN 5996-01-106-8903
NSN 6320-01-498-4954