Item must comply with requirements of defense supply center philadelphia production standard no. Po0128nrp
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 5950-00-815-1532
NSN 6135-00-613-1068
NSN 5975-00-852-2201
NSN 6650-01-526-1102
NSN 5990-01-561-7802
NSN 5915-01-337-9575
NSN 6145-01-349-4281
NSN 7035-00-437-7950
NSN 5999-00-186-0058
NSN 6650-00-299-9681
NSN 6110-00-521-8932
NSN 6610-00-841-5161