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 5925-00-862-0142
NSN 6620-01-652-4349
NSN 6105-00-281-8185
NSN 6130-01-481-8614
NSN 6135-00-127-1683
NSN 5930-00-592-1178
NSN 5930-01-476-7248
NSN 5990-01-510-4699
NSN 5998-01-327-2075
NSN 4140-01-126-8999
NSN 6220-00-925-0522
NSN 6145-00-813-3425