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 6320-01-503-7180
NSN 6130-00-558-6112
NSN 6320-00-681-1324
NSN 6150-01-004-8185
NSN 6240-01-227-4178
NSN 5999-01-153-7672
NSN 6220-00-084-0174
NSN 5925-01-226-9493
NSN 6650-00-859-1859
NSN 6240-01-620-7401
NSN 5996-01-049-7841
NSN 5990-00-822-9269