W/ribs on top outside dia. Extending 45 degrees to left and 45 degrees to right of center of inside dia.
A structural shape fabricated from nonmetallic material(s) having a peculiar preformed cross-sectional form. It may have a reinforcing agent(s) and backing. Excludes seal, nonmetallic special shaped section.
NSN 5990-01-425-2175
NSN 5960-01-268-8674
NSN 6650-01-441-1258
NSN 6320-01-489-6044
NSN 5935-01-232-1034
NSN 5895-01-040-1785
NSN 6110-00-826-0394
NSN 6220-00-869-6988
NSN 5999-01-366-9925
NSN 5975-00-211-2803
NSN 6320-01-450-1696
NSN 5855-01-534-3724