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 7035-00-421-8710
NSN 5960-00-519-9880
NSN 5855-01-308-0955
NSN 5945-00-859-2389
NSN 6685-01-564-1852
NSN 6650-00-826-7396
NSN 6150-00-542-8668
NSN 6320-00-905-0543
NSN 6110-01-442-7378
NSN 5920-01-157-9471
NSN 6135-01-309-5765
NSN 5960-01-133-3551