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 4140-00-555-3856
NSN 5998-00-050-2072
NSN 5915-01-279-3479
NSN 5996-01-265-8621
NSN 5945-01-423-1009
NSN 5960-01-039-6423
NSN 5905-00-078-9600
NSN 4140-01-605-1706
NSN 5915-00-062-6815
NSN 5920-01-253-8261
NSN 6130-01-115-0946
NSN 6240-01-217-8287