End item: nuclear power equipment, when ordering part must have meter number and meter seral number, this info is on tag on meter
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.
NSN 6685-01-452-1066
NSN 6220-01-068-4066
NSN 5935-01-254-2968
NSN 5965-00-289-6280
NSN 6145-00-106-0611
NSN 7035-01-408-6802
NSN 6645-00-363-9775
NSN 5975-00-271-5981
NSN 6135-00-284-1406
NSN 5996-00-760-8499
NSN 6645-01-512-8472
NSN 5975-01-390-0401