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 5998-00-738-7731
NSN 6145-01-434-9123
NSN 4140-01-214-1968
NSN 4140-01-142-3192
NSN 5855-01-456-0813
NSN 4140-00-083-6072
NSN 5985-00-548-7126
NSN 5998-01-364-8480
NSN 6620-01-456-0529
NSN 6220-01-551-8277
NSN 6150-01-493-4071
NSN 6135-00-660-8654