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 4140-00-080-8740
NSN 4140-01-074-6262
NSN 5895-00-139-1403
NSN 5920-01-589-9313
NSN 6220-01-435-2253
NSN 6135-01-278-9717
NSN 5855-01-364-4478
NSN 6220-00-557-4114
NSN 7035-00-679-9027
NSN 5998-01-293-2151
NSN 6650-01-647-1086
NSN 6150-00-458-8300