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 5975-01-143-3956
NSN 6650-01-439-8647
NSN 6220-01-245-9242
NSN 5990-01-548-3711
NSN 6145-01-216-1481
NSN 5895-01-534-6053
NSN 5975-00-505-2626
NSN 6610-01-553-4749
NSN 6685-00-329-0352
NSN 5910-01-137-4561
NSN 5998-01-470-9541
NSN 5960-00-270-8171