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 5905-01-499-6052
NSN 5950-01-123-9661
NSN 5999-00-230-9304
NSN 5990-01-632-0969
NSN 5920-01-132-0178
NSN 6610-00-625-3710
NSN 5996-01-141-6916
NSN 5915-01-296-2204
NSN 6220-00-349-6064
NSN 5925-00-144-0482
NSN 5915-00-170-6775
NSN 5855-00-631-4565