Od is 0.375 in
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 5999-00-852-2231
NSN 5920-01-127-6958
NSN 6135-00-548-2765
NSN 5965-01-568-9620
NSN 5945-00-401-0612
NSN 6240-01-227-4178
NSN 5985-01-642-6186
NSN 2925-00-911-4872
NSN 5996-01-388-3329
NSN 5998-00-325-3463
NSN 6320-00-925-0558
NSN 5975-01-476-1753