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 6105-00-506-8405
NSN 6240-00-115-5044
NSN 5990-01-478-8638
NSN 6610-00-729-6479
NSN 6150-00-400-8041
NSN 5975-01-659-6574
NSN 5950-01-378-7042
NSN 7035-01-629-9426
NSN 6150-00-596-9882
NSN 5925-01-399-4007
NSN 6135-01-104-3790
NSN 5930-00-245-8754