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 4140-00-343-2121
NSN 5996-01-079-2158
NSN 6620-01-193-1681
NSN 7035-00-392-5417
NSN 2925-01-052-0636
NSN 5930-01-004-7475
NSN 5950-01-313-2427
NSN 6620-01-552-0524
NSN 6135-00-087-5300
NSN 5910-01-181-5582
NSN 5925-01-560-5895
NSN 5985-01-612-2410