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 5960-00-152-9488
NSN 5960-00-050-4591
NSN 6110-01-526-7812
NSN 5935-01-243-6853
NSN 5925-00-934-3365
NSN 6150-00-024-2505
NSN 5935-00-511-6938
NSN 5925-01-359-5823
NSN 5975-01-489-6159
NSN 4140-01-511-4922
NSN 5935-00-880-5854
NSN 5999-01-381-0586