Item must comply with requirements of defense supply center philadelphiaproduction standard no. Po0258nrp
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.
Classification: Gaskets, washers and other seals, of vulcanized rubber other than hard rubber
NSN 5990-01-138-8981
NSN 6610-00-070-0325
NSN 5920-01-359-8720
NSN 6130-01-155-8308
NSN 6610-01-119-7873
NSN 5945-01-518-7509
NSN 6220-01-026-4562
NSN 6685-01-312-7483
NSN 6145-01-501-4228
NSN 5930-01-123-8304
NSN 6650-00-216-6365
NSN 4140-01-417-3022