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 6320-00-174-1362
NSN 6650-01-511-9568
NSN 6610-00-895-1688
NSN 5925-00-955-0659
NSN 6645-01-473-9179
NSN 6240-01-167-1060
NSN 6610-00-367-9603
NSN 5935-01-084-5843
NSN 5990-01-187-8594
NSN 6685-00-286-8481
NSN 5996-00-622-1546
NSN 5895-01-525-6828