As 538-030
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 5960-00-140-9583
NSN 5920-00-269-6178
NSN 7035-01-049-6776
NSN 5835-01-163-4215
NSN 6130-00-244-7593
NSN 6145-00-494-2847
NSN 6620-01-369-5876
NSN 5895-01-113-1991
NSN 5985-00-560-7925
NSN 6110-00-075-5660
NSN 5935-01-093-4309
NSN 5905-01-257-0504