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 5950-00-512-2928
NSN 5915-00-059-3584
NSN 5996-01-356-2203
NSN 5990-01-313-5543
NSN 5925-00-642-5253
NSN 6645-01-514-3353
NSN 5985-01-441-3590
NSN 5930-00-494-1825
NSN 5925-00-925-7840
NSN 6645-01-633-1852
NSN 6240-00-176-6048
NSN 2925-00-456-7627