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 6685-01-361-5195
NSN 5945-01-583-1514
NSN 5975-00-099-9312
NSN 6650-01-431-6796
NSN 5950-01-176-7233
NSN 6620-01-189-8153
NSN 6645-01-500-0827
NSN 6105-00-764-0993
NSN 5855-01-196-7082
NSN 5975-01-299-0620
NSN 5996-00-884-8575
NSN 6135-00-488-4478