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 5998-01-252-4142
NSN 5996-00-910-8826
NSN 6650-01-648-1864
NSN 6150-00-153-3196
NSN 6620-01-303-2563
NSN 6240-00-056-1571
NSN 6240-01-273-4903
NSN 2925-01-228-6554
NSN 5945-01-390-8222
NSN 5945-01-049-1995
NSN 6220-01-245-2667
NSN 5998-00-007-7057