Reference data navair 19-40-523
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.
NSN 5835-01-544-9670
NSN 5965-00-903-6298
NSN 6645-00-739-6718
NSN 5950-01-021-1568
NSN 6320-01-519-8767
NSN 6240-01-419-3495
NSN 5835-01-039-6993
NSN 2925-01-014-0118
NSN 6240-00-275-1950
NSN 5985-00-131-4315
NSN 6320-01-442-3428
NSN 5998-01-144-7797