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 5998-01-247-3831
NSN 6620-01-100-8899
NSN 5835-01-173-1578
NSN 6620-00-054-4778
NSN 5985-00-296-3822
NSN 6240-01-502-7103
NSN 5965-00-554-4138
NSN 6650-00-587-6917
NSN 6320-01-155-8295
NSN 5835-01-258-7866
NSN 5985-00-678-0881
NSN 6145-01-396-9707