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 5935-00-350-8698
NSN 5915-01-143-0444
NSN 5985-01-473-9745
NSN 6650-00-269-5000
NSN 5910-01-260-9844
NSN 5945-00-532-4367
NSN 5855-01-154-3871
NSN 6145-01-317-2686
NSN 5985-01-181-4393
NSN 4140-01-352-8059
NSN 5895-01-292-3584
NSN 6105-01-350-3333