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 5975-01-205-8208
NSN 6685-01-258-2455
NSN 6620-00-273-8735
NSN 6240-00-051-5163
NSN 6135-01-512-8740
NSN 6240-01-437-9439
NSN 5990-01-571-7468
NSN 6135-00-097-8162
NSN 4140-01-132-9450
NSN 6650-01-432-1830
NSN 6130-01-028-8609
NSN 6135-01-623-6992