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 5905-01-446-8177
NSN 5910-01-411-3929
NSN 6240-00-353-5753
NSN 5996-00-345-8025
NSN 6135-01-385-7276
NSN 6135-01-364-2738
NSN 5855-00-256-5562
NSN 5985-01-609-2315
NSN 6105-01-323-4695
NSN 5895-01-137-6658
NSN 5915-01-119-6858
NSN 6145-01-567-0005