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 5999-01-034-5320
NSN 5985-01-017-1849
NSN 6620-00-581-8984
NSN 5990-00-019-2486
NSN 6650-01-210-4445
NSN 5895-00-844-7523
NSN 5835-01-632-6627
NSN 6150-00-827-0081
NSN 5998-01-386-0208
NSN 5935-01-016-0565
NSN 5930-01-115-3455
NSN 6130-00-503-7865