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 5998-00-174-5034
NSN 5950-01-304-4052
NSN 5930-01-200-4149
NSN 6150-01-478-5108
NSN 5925-00-964-7901
NSN 6145-01-634-0388
NSN 5996-01-508-2467
NSN 5999-01-473-8942
NSN 5998-00-787-8350
NSN 5960-00-722-1044
NSN 5990-01-133-0351
NSN 6105-01-013-2660