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 5996-00-608-6425
NSN 2925-00-419-5868
NSN 5990-00-328-4490
NSN 6620-00-449-1973
NSN 6105-01-152-7605
NSN 6105-01-410-7275
NSN 5945-01-044-5825
NSN 6135-00-553-7995
NSN 6135-01-299-0778
NSN 5999-00-162-4353
NSN 4140-01-534-6960
NSN 4140-01-117-7733