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 5950-01-183-7546
NSN 6135-01-252-0315
NSN 2925-00-398-0253
NSN 4140-00-660-8699
NSN 5905-01-464-5544
NSN 5910-01-445-1692
NSN 5930-00-732-5584
NSN 5990-00-724-4375
NSN 5945-01-194-2587
NSN 6320-01-326-1316
NSN 5975-01-109-4674
NSN 6135-00-906-0984