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 6650-01-365-9306
NSN 2925-01-266-5229
NSN 6610-01-612-0157
NSN 6685-01-058-9380
NSN 5990-01-177-2838
NSN 5998-00-323-0063
NSN 5965-00-909-5345
NSN 5990-00-166-9476
NSN 6220-01-196-5969
NSN 6240-00-166-2271
NSN 5960-01-654-4353
NSN 5910-01-364-7702