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 5965-01-233-2759
NSN 5960-00-594-0824
NSN 5985-01-351-3849
NSN 6320-00-701-0437
NSN 5920-01-172-6358
NSN 5999-01-227-1615
NSN 6150-00-173-9283
NSN 5990-01-352-5255
NSN 5998-00-945-0407
NSN 2925-00-017-0526
NSN 5835-00-145-8926
NSN 6685-01-094-7219