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 6220-00-657-9795
NSN 6110-01-224-5047
NSN 5935-01-518-7072
NSN 5835-00-253-3453
NSN 6620-01-083-4672
NSN 5990-01-324-7529
NSN 7035-01-422-9483
NSN 4140-01-233-2479
NSN 2925-01-277-0873
NSN 6110-00-308-3993
NSN 6220-00-122-7588
NSN 7035-01-534-6391