Ref literature pump repair parts dv-42n through dv-285n series page 67 ref 6
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 5990-00-539-7859
NSN 6645-01-025-1002
NSN 6105-01-353-6588
NSN 6150-01-075-6558
NSN 6685-00-272-2267
NSN 2925-01-148-5810
NSN 5835-01-599-1876
NSN 5965-01-365-1678
NSN 5930-01-381-5528
NSN 4140-00-657-4964
NSN 5895-00-950-4890
NSN 6150-01-425-0883