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 5960-01-469-8421
NSN 5999-01-634-0576
NSN 5930-01-521-3881
NSN 6620-01-512-3032
NSN 5895-01-085-6950
NSN 6320-01-576-6310
NSN 6320-01-431-4359
NSN 5999-01-462-5205
NSN 6620-01-467-2111
NSN 5998-01-349-9152
NSN 5910-01-278-7912
NSN 5930-01-255-0763