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 4140-01-049-1375
NSN 5895-00-021-8367
NSN 6135-00-057-2005
NSN 5945-00-185-6609
NSN 5905-00-877-9859
NSN 5930-00-456-9105
NSN 6150-01-444-3980
NSN 5945-01-086-2148
NSN 5905-01-632-5325
NSN 5996-01-327-0220
NSN 5895-01-634-0630
NSN 5930-00-105-8869