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 4140-00-408-9989
NSN 5965-00-372-2537
NSN 5930-00-732-0975
NSN 6145-01-589-4198
NSN 5915-00-224-3750
NSN 5950-00-389-7139
NSN 6650-01-175-0841
NSN 5975-01-585-2654
NSN 6110-01-214-9469
NSN 6610-00-147-9332
NSN 5915-01-605-3326
NSN 5905-00-582-7031