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 5855-00-631-4565
NSN 5998-01-651-8989
NSN 5985-00-274-4062
NSN 6650-01-461-4170
NSN 4140-01-608-3992
NSN 4140-01-100-4164
NSN 6220-01-290-8407
NSN 6220-01-632-8217
NSN 4140-00-258-2056
NSN 5960-01-491-2993
NSN 5920-00-296-2842
NSN 5920-01-282-7691