American backflow parts catalog page c14
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 6145-01-419-0796
NSN 6105-01-390-6386
NSN 5996-00-340-5634
NSN 5996-00-707-6228
NSN 6620-01-552-4980
NSN 6620-00-525-6069
NSN 2925-01-528-7333
NSN 6105-00-010-8153
NSN 6610-01-422-2376
NSN 5855-01-267-2751
NSN 5925-00-116-8706
NSN 2925-01-187-5480