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 5975-01-307-1716
NSN 5925-01-076-4458
NSN 5905-00-649-0425
NSN 5996-00-754-2840
NSN 5915-00-757-5372
NSN 5960-00-816-9040
NSN 5965-01-340-8968
NSN 5985-00-063-1847
NSN 6620-01-175-5922
NSN 6220-00-260-9390
NSN 5920-00-529-0618
NSN 5965-01-413-4424