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 5965-01-486-3564
NSN 5990-01-395-4194
NSN 5998-01-406-3671
NSN 5990-00-258-0228
NSN 6240-01-312-2061
NSN 5990-01-105-5336
NSN 6145-00-963-0167
NSN 6110-01-084-2651
NSN 6240-01-604-9172
NSN 6240-01-266-1652
NSN 5895-01-568-2343
NSN 5910-00-577-9390