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 5935-01-542-6683
NSN 5990-01-080-0097
NSN 6150-01-463-7698
NSN 5996-00-566-3861
NSN 6320-01-495-1244
NSN 5945-01-049-2950
NSN 5855-01-598-2062
NSN 5910-01-617-4826
NSN 5855-01-378-9048
NSN 6320-01-407-2285
NSN 5915-00-902-0358
NSN 5960-01-357-1261