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 6685-01-600-4761
NSN 6150-00-724-1598
NSN 6610-01-423-0250
NSN 5998-01-348-4154
NSN 5925-00-840-9071
NSN 4140-01-415-6013
NSN 5905-00-931-6999
NSN 5835-01-406-9638
NSN 5999-00-482-5608
NSN 5920-01-661-1904
NSN 5985-01-280-1930
NSN 5990-01-324-7529