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 6145-01-220-5422
NSN 2925-00-325-4372
NSN 6220-00-555-6609
NSN 6620-01-379-1235
NSN 4140-01-086-1912
NSN 5835-00-198-4936
NSN 5945-00-850-0428
NSN 6240-00-262-2894
NSN 6240-01-501-4551
NSN 7035-00-413-0992
NSN 6150-01-466-0876
NSN 5920-01-474-7536