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 6220-01-521-2720
NSN 7035-01-163-3667
NSN 5990-00-007-5170
NSN 5920-01-589-0876
NSN 5990-01-590-4515
NSN 5895-01-283-0952
NSN 6645-00-936-9111
NSN 6135-01-631-4483
NSN 6220-01-601-7132
NSN 6650-00-078-5773
NSN 6240-01-359-6024
NSN 5835-00-351-9459