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 5935-01-386-0568
NSN 6685-01-424-3237
NSN 6240-01-041-2519
NSN 6320-01-176-8367
NSN 5999-00-166-0701
NSN 5990-01-421-3325
NSN 5999-00-195-7266
NSN 6105-00-938-9212
NSN 6240-00-081-6889
NSN 5998-01-323-7112
NSN 5998-01-049-2702
NSN 5895-00-232-1314