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 5930-00-964-6350
NSN 5998-00-146-3853
NSN 6110-01-415-5086
NSN 5905-00-236-9891
NSN 5996-01-055-5247
NSN 5930-00-467-5258
NSN 5996-00-417-3278
NSN 6620-00-774-3638
NSN 6135-01-612-6991
NSN 6620-00-369-9481
NSN 5990-01-037-6531
NSN 6105-00-904-8190