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 6620-01-641-8741
NSN 5998-01-641-0066
NSN 6150-00-148-8515
NSN 5996-01-326-1827
NSN 6105-00-275-0826
NSN 6135-00-299-6918
NSN 5950-00-217-1686
NSN 6620-01-589-2857
NSN 5996-01-317-7289
NSN 5998-01-165-3662
NSN 5935-01-270-7032
NSN 5945-00-783-4404