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 5960-01-514-5433
NSN 5905-01-442-4669
NSN 5925-00-491-4573
NSN 6105-00-910-4499
NSN 5998-01-425-2970
NSN 5910-01-488-8933
NSN 6650-01-475-3714
NSN 6150-00-952-1364
NSN 5920-01-258-3664
NSN 5935-01-356-4031
NSN 5935-01-077-3189
NSN 6685-00-270-0692