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 5965-01-098-1306
NSN 5960-01-443-3067
NSN 6620-00-416-4131
NSN 4140-00-451-8374
NSN 6610-01-047-7245
NSN 5925-00-775-3614
NSN 5998-00-526-9253
NSN 5999-00-492-5071
NSN 2925-00-973-9413
NSN 5855-00-058-1293
NSN 4140-00-554-4050
NSN 6620-01-607-5738