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 5985-01-350-3454
NSN 6220-01-581-7352
NSN 5990-00-155-2306
NSN 6130-00-075-2202
NSN 5855-01-406-4821
NSN 6650-01-530-7763
NSN 7035-01-486-4118
NSN 6145-00-786-1172
NSN 5920-00-579-2286
NSN 5999-00-757-2690
NSN 5950-01-388-5950
NSN 6150-00-840-5847