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 6150-01-145-5156
NSN 6610-01-621-9504
NSN 6240-01-573-8989
NSN 6685-01-656-6360
NSN 5999-01-298-0119
NSN 5935-01-597-7657
NSN 5930-00-733-7935
NSN 6685-01-605-2497
NSN 5910-01-463-9061
NSN 6610-01-481-6260
NSN 5960-01-108-2984
NSN 6320-01-382-9676