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 6610-01-514-5928
NSN 5835-00-853-7785
NSN 5999-00-753-0652
NSN 4140-01-094-8778
NSN 5975-00-469-1443
NSN 6650-01-496-8962
NSN 5960-01-628-2760
NSN 5996-01-390-2125
NSN 5975-00-553-7151
NSN 5990-00-424-8872
NSN 6685-00-505-7883
NSN 6685-01-166-3903