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 7035-01-182-7640
NSN 5835-01-220-5093
NSN 6320-00-036-3688
NSN 6610-01-497-6365
NSN 5925-01-082-0591
NSN 5855-01-610-9321
NSN 5990-01-586-8202
NSN 5930-01-207-6427
NSN 5935-00-059-3064
NSN 5905-01-549-0755
NSN 4140-01-350-3277
NSN 4140-01-447-4826