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 6145-00-913-0037
NSN 5999-00-827-0703
NSN 5915-01-657-5754
NSN 6650-01-519-9165
NSN 5835-01-507-0731
NSN 5945-01-534-3664
NSN 6130-01-245-7156
NSN 5895-00-906-9945
NSN 6135-00-078-9931
NSN 5910-01-519-7934
NSN 4140-01-541-8487
NSN 6105-01-383-3657