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 5930-01-429-9275
NSN 5915-01-225-1355
NSN 2925-01-211-3294
NSN 6135-01-116-3385
NSN 5920-00-164-1147
NSN 4140-01-428-7650
NSN 5910-01-422-1699
NSN 5950-01-425-1884
NSN 5950-01-457-6409
NSN 5945-01-319-1654
NSN 5935-01-568-1190
NSN 6320-00-213-0068