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 5945-01-415-0858
NSN 6135-01-252-0315
NSN 6220-01-400-4203
NSN 6240-01-331-0841
NSN 5975-01-629-9491
NSN 6320-01-227-2648
NSN 5905-00-503-5297
NSN 2925-01-141-7563
NSN 5910-01-556-8008
NSN 5925-01-625-2979
NSN 7035-01-551-1240
NSN 5935-01-336-1045