2.5 od x 2.1 id x .210
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 5855-01-573-9926
NSN 5999-00-840-4442
NSN 5835-00-473-1010
NSN 5895-00-508-1877
NSN 5999-01-106-3593
NSN 7035-01-106-3476
NSN 5930-01-599-2342
NSN 5855-01-469-6123
NSN 6110-00-061-7611
NSN 5975-00-314-1667
NSN 5945-01-281-5072
NSN 5975-00-644-4972