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 5985-00-868-8769
NSN 5920-00-541-1119
NSN 5945-00-286-8594
NSN 5855-01-286-9928
NSN 6150-01-365-2197
NSN 5950-01-642-0685
NSN 5960-01-411-5899
NSN 5999-00-058-1780
NSN 6110-00-556-0080
NSN 5910-01-055-4661
NSN 6150-01-441-2254
NSN 5915-01-406-7689