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 5985-00-131-6751
NSN 5996-01-049-7841
NSN 5905-01-112-0144
NSN 6650-00-059-6268
NSN 2925-01-181-3972
NSN 5835-00-334-6556
NSN 5999-00-929-5846
NSN 5905-00-242-1139
NSN 5945-01-355-5385
NSN 5998-01-363-5046
NSN 6685-00-481-9852
NSN 6150-00-279-3183