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 6220-00-222-5663
NSN 5945-00-528-9906
NSN 5910-01-346-1585
NSN 5960-01-043-4770
NSN 6320-00-500-4172
NSN 6320-01-397-9995
NSN 5999-01-534-3123
NSN 5855-00-058-1293
NSN 5975-00-707-6245
NSN 5960-01-580-6360
NSN 4140-01-510-9844
NSN 5960-00-148-4493