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 5965-00-855-4500
NSN 5965-01-447-2373
NSN 6150-01-228-2847
NSN 6320-00-242-3300
NSN 5855-01-331-8502
NSN 4140-01-080-1881
NSN 5945-00-487-5753
NSN 5990-01-575-3275
NSN 7035-00-679-9027
NSN 6130-01-602-8267
NSN 6145-01-496-6606
NSN 6105-00-960-6327