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 5935-00-900-6935
NSN 6220-00-317-4294
NSN 2925-01-568-3705
NSN 5990-01-057-4191
NSN 6240-01-297-2978
NSN 5999-01-354-2778
NSN 5925-00-851-3605
NSN 5895-01-418-2910
NSN 5996-00-937-4598
NSN 5998-01-413-3771
NSN 5920-00-529-0618
NSN 5835-00-174-7763