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 6145-01-176-4047
NSN 6130-01-186-7279
NSN 5895-01-408-4616
NSN 5975-00-557-7995
NSN 5950-00-758-7793
NSN 6130-01-412-7452
NSN 5998-01-058-9389
NSN 5965-01-444-3098
NSN 6320-01-255-2096
NSN 5960-01-567-1096
NSN 6150-00-679-9203
NSN 5920-01-569-2896