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 6610-01-645-0331
NSN 5930-01-006-5933
NSN 5960-01-580-6360
NSN 6650-00-862-2142
NSN 6130-01-577-3453
NSN 2925-01-030-6580
NSN 6130-01-147-7414
NSN 5915-00-181-5876
NSN 5915-00-241-6493
NSN 6105-00-781-1254
NSN 6620-01-651-5425
NSN 6130-00-021-5372