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 6150-00-518-2743
NSN 5935-00-969-7798
NSN 5915-00-375-5000
NSN 5965-01-573-2653
NSN 5945-01-011-7279
NSN 5965-01-077-3346
NSN 5985-01-423-8322
NSN 5930-00-470-5885
NSN 6105-00-828-2077
NSN 6135-00-542-6216
NSN 5945-00-648-0552
NSN 6220-01-475-2842