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: Gaskets,washers & other seals
NSN 5915-01-125-9340
NSN 6150-00-117-4284
NSN 6220-00-024-5355
NSN 5990-01-633-9503
NSN 6220-01-432-7629
NSN 2925-01-058-1718
NSN 5998-01-502-4356
NSN 5835-00-794-7500
NSN 6135-01-459-1239
NSN 6620-01-294-1044
NSN 5905-01-450-8038
NSN 5835-01-470-3337