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 5930-01-322-8220
NSN 5998-01-650-1622
NSN 5920-01-588-7898
NSN 5950-01-632-0183
NSN 5920-01-107-0838
NSN 6610-00-335-0091
NSN 2925-01-198-7528
NSN 5895-01-167-8905
NSN 6110-00-257-5199
NSN 5998-01-004-0799
NSN 6145-01-546-7918
NSN 5935-00-629-2764