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 6650-00-364-7866
NSN 5935-01-388-2899
NSN 6110-00-325-4519
NSN 6645-01-032-5337
NSN 5930-00-176-4065
NSN 5910-01-471-3797
NSN 5960-00-344-2586
NSN 6620-01-423-7300
NSN 5910-01-573-6538
NSN 5960-01-406-3672
NSN 4140-00-003-8311
NSN 5855-01-228-0942