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 4140-01-130-7858
NSN 7035-01-406-5232
NSN 5855-01-003-7102
NSN 5910-01-520-3519
NSN 6645-01-086-4509
NSN 5985-00-799-8590
NSN 5945-00-383-4890
NSN 6620-01-621-0719
NSN 5998-00-621-4542
NSN 6650-00-834-9062
NSN 6650-01-493-9985
NSN 4140-01-421-8551