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 6320-01-523-4954
NSN 4140-01-530-1656
NSN 6240-01-173-3958
NSN 5895-00-067-3993
NSN 5945-00-455-8546
NSN 6220-00-044-5917
NSN 6135-01-424-8130
NSN 5930-00-199-8465
NSN 5950-01-248-8771
NSN 5998-00-661-0380
NSN 6145-01-411-7179
NSN 5925-01-145-9198