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 5998-00-446-3383
NSN 5990-01-553-1094
NSN 5999-00-524-5525
NSN 6685-01-526-8313
NSN 6685-01-433-7951
NSN 2925-01-459-8093
NSN 5910-00-921-9000
NSN 5950-01-583-6563
NSN 6320-01-237-9746
NSN 5945-01-495-0509
NSN 5999-01-262-6257
NSN 5915-00-342-9261