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 6135-01-222-0703
NSN 5999-01-509-6814
NSN 6150-01-355-2195
NSN 2925-01-591-4030
NSN 5935-00-217-2005
NSN 6130-00-323-8300
NSN 5855-01-059-2710
NSN 6150-01-128-4045
NSN 4140-01-634-0330
NSN 5950-01-224-5951
NSN 5996-01-325-8555
NSN 6220-00-997-6462