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 6240-00-004-2516
NSN 6220-01-519-9305
NSN 6610-01-112-0447
NSN 5960-01-111-9918
NSN 5998-01-273-3177
NSN 5915-01-521-6706
NSN 6320-00-403-6003
NSN 6620-01-111-8210
NSN 5990-01-318-3238
NSN 5920-01-314-4762
NSN 6150-00-166-5777
NSN 7035-01-503-5517