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 5998-01-553-5160
NSN 6130-01-291-6272
NSN 5985-01-142-7623
NSN 5905-01-238-7713
NSN 6135-00-497-0491
NSN 2925-01-155-5444
NSN 5950-01-357-6966
NSN 5990-01-390-2177
NSN 4140-00-854-8871
NSN 6645-01-319-0006
NSN 5930-01-351-8953
NSN 6145-01-542-9437