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 5930-00-660-4142
NSN 5920-01-625-7044
NSN 5998-00-726-2074
NSN 5905-01-087-1143
NSN 5996-00-438-3154
NSN 6620-01-454-8926
NSN 6240-00-269-9477
NSN 5950-00-057-9104
NSN 6650-01-530-0589
NSN 5945-01-250-9403
NSN 5996-00-991-0724
NSN 5935-00-240-7728