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 5895-01-262-6591
NSN 6150-00-316-3223
NSN 5920-00-227-6586
NSN 4140-00-173-0706
NSN 5920-00-175-7987
NSN 5920-00-357-0260
NSN 5950-01-186-6736
NSN 5950-00-905-8384
NSN 6240-01-435-6505
NSN 5950-01-177-5230
NSN 7035-01-088-6415
NSN 6105-01-153-2302