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 2925-01-016-3111
NSN 5935-00-661-0825
NSN 5998-00-287-7983
NSN 4140-01-100-0743
NSN 5999-00-295-6285
NSN 5975-01-200-6048
NSN 5930-00-330-9880
NSN 5915-01-605-3245
NSN 5965-00-773-9047
NSN 7035-01-191-2822
NSN 6135-01-260-7180
NSN 6650-00-427-7858