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 5915-01-500-2147
NSN 5996-00-693-9568
NSN 5999-01-303-8404
NSN 7035-01-555-8289
NSN 5930-00-852-8490
NSN 5920-01-147-6860
NSN 2925-00-845-1480
NSN 6220-00-205-2040
NSN 6105-01-373-7888
NSN 6105-01-504-5332
NSN 5998-01-513-2092
NSN 6650-01-144-1843