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 5990-01-124-8412
NSN 5895-01-161-9386
NSN 6650-01-493-3660
NSN 6220-00-379-4044
NSN 6150-01-423-6392
NSN 5999-01-533-0028
NSN 5835-01-502-9228
NSN 5950-00-972-4933
NSN 6110-01-209-6906
NSN 5855-01-093-3080
NSN 5835-01-248-0563
NSN 5915-00-998-4573