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 5915-01-197-1857
NSN 6105-01-142-0234
NSN 5998-01-502-5942
NSN 6135-00-660-8654
NSN 5999-00-019-3455
NSN 5915-01-131-9777
NSN 5905-01-508-0689
NSN 5960-01-448-3497
NSN 2925-00-998-3510
NSN 4140-01-432-7433
NSN 6620-00-635-7347
NSN 6135-00-444-1402