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 5905-01-500-2089
NSN 6610-01-415-5877
NSN 6620-00-510-5162
NSN 6130-00-470-0522
NSN 5998-00-902-7409
NSN 6645-01-487-4341
NSN 5990-01-548-5979
NSN 5950-01-012-1906
NSN 6150-00-733-2752
NSN 5915-01-276-1164
NSN 4140-01-381-6738
NSN 5960-01-507-9112