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 5985-01-368-3913
NSN 5945-00-894-5299
NSN 6150-01-454-1111
NSN 5930-01-144-5156
NSN 5999-00-269-3663
NSN 5835-00-841-2650
NSN 5998-00-019-1848
NSN 6130-00-839-3227
NSN 6610-00-879-2788
NSN 5925-01-368-1501
NSN 6130-00-200-9095
NSN 5935-01-427-3822