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 5920-01-525-9761
NSN 5960-00-333-0702
NSN 6145-01-233-4796
NSN 6220-00-056-8827
NSN 5855-01-471-7836
NSN 5975-00-833-9596
NSN 6150-00-957-8392
NSN 6130-01-550-5673
NSN 4140-01-550-0022
NSN 5985-01-196-1191
NSN 6645-00-166-7926
NSN 5960-00-244-1642