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 5960-00-774-8227
NSN 7035-00-946-2642
NSN 4140-01-480-8634
NSN 5925-01-420-6211
NSN 5855-01-433-7009
NSN 5999-00-493-9471
NSN 5925-00-246-4645
NSN 6145-00-811-4606
NSN 5998-01-127-6822
NSN 5945-00-718-0164
NSN 5925-01-642-5524
NSN 6135-00-057-2005