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 5935-01-381-2506
NSN 5920-01-368-6129
NSN 4140-00-357-8181
NSN 4140-01-232-0306
NSN 5905-00-228-6986
NSN 6240-01-559-3806
NSN 6145-01-151-6133
NSN 5895-00-104-5982
NSN 5999-00-316-4326
NSN 2925-01-197-7864
NSN 5905-01-186-7296
NSN 5999-01-025-2850