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 5945-01-415-2228
NSN 6620-00-734-7746
NSN 6620-00-990-3385
NSN 6105-01-468-0532
NSN 5920-01-061-3158
NSN 6130-00-533-7953
NSN 5925-01-437-5902
NSN 5895-01-535-3227
NSN 6650-00-018-7298
NSN 5990-01-421-3325
NSN 5960-01-254-3541
NSN 5935-01-570-2074