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 6240-00-877-3405
NSN 5915-00-414-3189
NSN 5998-01-406-2336
NSN 6135-00-209-6918
NSN 6145-01-487-8981
NSN 5915-00-430-5104
NSN 5920-01-532-8280
NSN 5935-00-294-9526
NSN 5998-01-148-8591
NSN 2925-01-556-0333
NSN 2925-01-155-2994
NSN 5855-01-088-8700