Outside diameter is 0.558 inches
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 6320-00-790-4844
NSN 5945-01-013-9311
NSN 2925-00-215-4954
NSN 6105-01-257-7326
NSN 5855-00-688-9954
NSN 6620-01-491-7001
NSN 6220-01-511-5148
NSN 5910-01-181-5677
NSN 5905-00-259-9280
NSN 5965-00-479-9567
NSN 5998-01-315-2978
NSN 5998-00-544-6930