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 5945-00-482-2141
NSN 5835-00-905-7165
NSN 4140-01-409-1764
NSN 5998-01-374-6750
NSN 6130-00-234-8710
NSN 5895-01-483-7705
NSN 5855-00-288-1408
NSN 6240-01-282-7094
NSN 6130-00-773-0164
NSN 6150-01-472-7119
NSN 6105-01-389-6451
NSN 6110-01-411-6608