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 6650-01-539-9641
NSN 2925-00-717-7904
NSN 5975-01-250-2940
NSN 6150-00-644-8745
NSN 5925-00-320-7673
NSN 5965-01-652-5127
NSN 5960-01-119-4609
NSN 5975-00-288-5877
NSN 5910-01-076-6117
NSN 6650-01-240-2334
NSN 6145-01-013-1525
NSN 6685-00-445-4121