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 6150-01-559-9484
NSN 5915-01-344-4834
NSN 5920-01-389-7348
NSN 6610-00-941-0509
NSN 5998-01-503-4181
NSN 4140-01-338-2154
NSN 5985-01-524-0525
NSN 5930-01-476-7248
NSN 6145-00-504-5221
NSN 5996-00-934-1518
NSN 6150-01-640-6931
NSN 5915-00-111-1905