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 5965-01-523-2240
NSN 5895-01-224-5857
NSN 5915-00-152-4016
NSN 5945-01-603-4369
NSN 4140-01-469-1205
NSN 6110-00-018-9112
NSN 2925-00-168-2287
NSN 6130-00-876-2511
NSN 5920-00-510-7656
NSN 5945-00-165-3878
NSN 5910-01-608-5641
NSN 6110-01-470-2688