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 4140-00-686-4894
NSN 2925-00-422-5159
NSN 2925-00-203-8735
NSN 2925-01-629-9416
NSN 5935-01-154-4239
NSN 6610-00-937-3798
NSN 6105-00-678-3355
NSN 5915-00-617-9477
NSN 5855-01-085-5354
NSN 5965-00-693-8829
NSN 6145-00-008-1834
NSN 5960-01-073-4201