Engine reference number 20
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.
NSN 6220-01-401-5337
NSN 5950-01-628-5958
NSN 5965-00-529-0602
NSN 5935-00-983-7368
NSN 7035-00-232-4043
NSN 5996-01-259-7416
NSN 6645-00-679-8203
NSN 5985-01-403-2835
NSN 5990-01-097-4721
NSN 5935-00-163-3644
NSN 6135-00-461-3590
NSN 5910-01-425-6127