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 6320-01-176-8367
NSN 5905-01-446-7360
NSN 6130-00-264-6195
NSN 5905-01-589-2113
NSN 5965-01-240-0233
NSN 6610-00-398-0104
NSN 5999-00-781-9663
NSN 7035-00-541-8516
NSN 6320-00-886-9771
NSN 4140-01-658-0029
NSN 6650-00-076-1883
NSN 4140-00-648-3303