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 6240-00-788-6972
NSN 6105-00-285-2774
NSN 6105-00-159-0723
NSN 6110-01-434-6238
NSN 5998-01-502-8194
NSN 5935-00-115-2435
NSN 5960-01-142-1995
NSN 5920-00-090-3126
NSN 7035-01-464-1213
NSN 6105-00-583-9958
NSN 6650-00-007-4372
NSN 6240-01-182-1895