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 6145-01-274-5559
NSN 6220-00-923-8628
NSN 5905-01-571-7188
NSN 6220-01-548-6697
NSN 6650-01-551-1547
NSN 6240-00-442-6327
NSN 5925-00-472-1371
NSN 6650-01-064-7116
NSN 6685-00-892-2454
NSN 5996-01-015-2922
NSN 4140-01-614-7485
NSN 5930-01-359-9053