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 5930-00-593-9687
NSN 5945-00-147-7744
NSN 5985-01-469-0760
NSN 6645-00-429-0172
NSN 6105-01-594-1249
NSN 5895-01-049-7242
NSN 5925-01-184-0633
NSN 2925-00-468-5273
NSN 5935-01-252-7668
NSN 6135-01-579-3534
NSN 5999-01-035-9817
NSN 6110-01-277-3952