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 6685-00-153-3914
NSN 5990-00-673-0277
NSN 5915-01-535-7478
NSN 5965-01-633-8849
NSN 6685-01-534-4623
NSN 6110-01-406-3623
NSN 4140-00-403-9202
NSN 5975-01-080-6643
NSN 6150-01-126-1783
NSN 4140-01-044-6064
NSN 6650-00-730-2995
NSN 5960-01-263-6781