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 5915-00-932-9066
NSN 5835-01-016-4745
NSN 6220-01-557-3313
NSN 5998-01-503-5867
NSN 5990-00-797-2592
NSN 5990-00-486-0506
NSN 5998-00-253-1346
NSN 5985-01-487-4053
NSN 4140-01-288-0764
NSN 5996-01-521-0367
NSN 6650-01-510-9488
NSN 7035-01-504-0192