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 6645-00-300-0401
NSN 6645-01-442-6476
NSN 5925-01-037-8753
NSN 2925-01-589-4880
NSN 5960-01-605-9921
NSN 2925-01-362-2515
NSN 5915-01-347-4372
NSN 7035-00-235-3529
NSN 7035-01-570-5091
NSN 6645-01-193-9839
NSN 5915-00-007-3813
NSN 5985-01-499-5357