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 5960-00-181-0640
NSN 5950-00-171-0311
NSN 5920-00-290-1844
NSN 6620-01-065-8265
NSN 5855-01-190-7049
NSN 2925-00-449-2478
NSN 5950-01-186-1976
NSN 5998-01-560-6527
NSN 5930-01-054-0350
NSN 5975-01-303-2166
NSN 6620-01-390-7245
NSN 2925-01-125-9169