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 5985-01-614-1968
NSN 6150-01-441-7933
NSN 5999-00-688-3666
NSN 5965-01-099-2989
NSN 4140-00-689-3473
NSN 5910-01-658-2981
NSN 6105-00-564-8798
NSN 5945-00-115-3594
NSN 5996-01-420-2745
NSN 5960-01-252-8821
NSN 6130-00-107-1297
NSN 6150-00-762-0956