Underwater life support iaw navsea instruction 10560.2b
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 6320-01-277-5793
NSN 4140-01-429-7510
NSN 5855-01-410-8979
NSN 6130-00-486-0570
NSN 5925-01-660-3505
NSN 5910-01-271-3024
NSN 5975-01-284-3077
NSN 5930-00-151-9286
NSN 5998-01-548-3707
NSN 4140-01-210-2212
NSN 5998-00-323-1289
NSN 5905-00-636-9999