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 5965-01-512-2895
NSN 6110-00-423-5836
NSN 5945-01-090-5735
NSN 6105-01-143-1332
NSN 5905-01-629-1716
NSN 5945-01-145-8932
NSN 5945-00-864-5193
NSN 5930-00-287-0983
NSN 5960-01-547-6699
NSN 5895-00-963-7233
NSN 4140-01-040-8410
NSN 5985-01-617-0658