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 6220-01-634-0660
NSN 6650-00-430-0296
NSN 6110-01-643-5853
NSN 6130-00-826-8284
NSN 5930-01-207-5599
NSN 5935-01-281-3044
NSN 5945-00-547-7995
NSN 5920-01-117-6258
NSN 6150-01-117-9510
NSN 5915-00-451-5665
NSN 4140-01-533-5332
NSN 5960-00-726-0580