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 6610-01-597-1657
NSN 5965-01-442-7364
NSN 6110-01-469-5921
NSN 5999-01-063-8092
NSN 5910-01-188-6858
NSN 5935-01-605-1069
NSN 6105-01-344-7302
NSN 4140-00-640-6608
NSN 6320-00-937-5625
NSN 5935-00-388-5345
NSN 6610-01-587-1803
NSN 6110-01-077-1473