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 5945-01-429-0217
NSN 6150-01-491-4903
NSN 6220-01-317-9665
NSN 5935-00-450-5927
NSN 5910-00-827-0858
NSN 6320-01-176-8367
NSN 5835-00-969-5771
NSN 5960-00-220-6892
NSN 6240-01-234-6053
NSN 5905-00-411-0623
NSN 6240-00-912-1074
NSN 6685-00-269-6444