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 5998-00-993-6443
NSN 6685-01-490-3505
NSN 5910-01-201-0010
NSN 6610-00-699-0714
NSN 2925-01-589-9136
NSN 5935-00-288-5973
NSN 5915-00-861-1683
NSN 5945-00-034-6740
NSN 6105-00-837-4135
NSN 5999-00-834-1270
NSN 5920-01-281-2944
NSN 5999-01-422-1056