Oxygen clean requirement
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.
Classification: Gaskets, washers and other seals, of vulcanized rubber other than hard rubber
NSN 5950-00-584-4571
NSN 2925-00-278-9468
NSN 7035-00-179-3924
NSN 5945-00-040-7386
NSN 5996-01-616-9538
NSN 5965-00-995-6636
NSN 6610-01-648-9997
NSN 6650-01-555-8819
NSN 4140-00-279-3148
NSN 5835-00-422-1441
NSN 5950-01-165-7089
NSN 5895-01-491-8668