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 5930-01-357-4284
NSN 6610-00-492-9872
NSN 5999-00-391-6985
NSN 5930-00-489-1467
NSN 5835-01-173-1578
NSN 5998-01-452-1425
NSN 5975-01-643-3408
NSN 4140-01-597-3519
NSN 6130-01-212-3445
NSN 5935-01-403-2844
NSN 6610-00-260-1181
NSN 6105-01-462-7337