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 5910-01-004-9285
NSN 5915-01-338-5758
NSN 5930-00-971-6950
NSN 6645-01-480-3347
NSN 5910-01-097-7231
NSN 5996-00-951-6842
NSN 6650-01-084-9726
NSN 5960-01-632-6576
NSN 6135-01-353-1036
NSN 5945-00-088-8296
NSN 4140-01-191-7577
NSN 6105-00-376-2174