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 5935-00-266-8506
NSN 6150-01-361-6073
NSN 6220-01-244-5329
NSN 5998-01-513-8132
NSN 6620-00-088-8795
NSN 6685-00-155-8158
NSN 5835-00-544-0298
NSN 5930-01-591-8570
NSN 5965-00-716-7078
NSN 6320-01-512-2031
NSN 5930-01-429-5621
NSN 2925-01-333-6346