Item must comply with requirements of defense supply center philadelphia production standard no. Po0089nrp
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 4140-00-886-1710
NSN 5855-01-138-4985
NSN 6110-00-624-1906
NSN 5960-01-106-3086
NSN 5999-01-161-3557
NSN 7035-01-492-6799
NSN 5895-00-372-5493
NSN 6620-01-414-4578
NSN 5965-01-486-3564
NSN 5855-01-308-0955
NSN 6620-01-431-0706
NSN 6240-01-334-5087