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 5960-01-271-8107
NSN 5975-00-149-0758
NSN 6650-01-177-4398
NSN 6110-00-400-1404
NSN 6320-01-478-9351
NSN 6240-01-476-7357
NSN 5945-01-197-7285
NSN 5990-00-791-2688
NSN 5965-01-559-7390
NSN 4140-01-626-8417
NSN 6620-01-168-1615
NSN 5895-01-063-8104