Size per as568-348; astm d2000/sae j200 type, class "hk" material
No other part numbers with same form, fit, and function found.
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 5985-00-035-4558
NSN 6645-01-648-4439
NSN 5996-01-503-8589
NSN 5935-01-400-5949
NSN 6135-00-078-9931
NSN 5915-01-650-9353
NSN 6135-00-299-6918
NSN 5985-01-324-6248
NSN 6145-00-226-9499
NSN 5998-00-373-2560
NSN 6650-01-438-4117
NSN 6610-01-386-4582