A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Parts of armored fighting vehicles,motorized, whether or not fitted with weapons
NSN 5996-01-155-2467
NSN 5855-00-610-4052
NSN 4140-01-305-8682
NSN 5990-00-093-6794
NSN 5855-01-351-2541
NSN 6650-01-554-2824
NSN 5950-01-653-0499
NSN 6645-01-338-9152
NSN 6145-01-630-3162
NSN 6620-00-246-5159
NSN 5895-00-208-1949
NSN 5895-01-208-7298