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 5925-00-227-0396
NSN 6220-01-551-1681
NSN 5985-01-509-0910
NSN 6130-00-273-1111
NSN 5999-01-154-2453
NSN 6130-01-444-1725
NSN 5950-01-452-0730
NSN 5855-01-254-3110
NSN 6145-01-301-9506
NSN 6650-01-652-4361
NSN 6130-00-470-8589
NSN 5945-01-592-3379