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 6320-00-731-6134
NSN 5835-01-123-8305
NSN 5835-01-193-6192
NSN 5910-01-580-4098
NSN 6620-01-128-9808
NSN 5965-01-568-5399
NSN 5996-01-271-1542
NSN 5835-00-949-3018
NSN 5960-01-089-8155
NSN 5965-01-063-7894
NSN 6130-00-031-0614
NSN 6620-00-247-7427