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 5999-00-251-7817
NSN 6135-00-009-4100
NSN 5999-01-473-1075
NSN 6685-01-010-3234
NSN 6110-01-614-9290
NSN 6620-01-658-5768
NSN 5960-01-493-3948
NSN 5999-01-135-7047
NSN 6620-01-431-9176
NSN 5905-01-432-4226
NSN 6135-00-782-6988
NSN 4140-01-025-7404