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 5960-00-410-8230
NSN 5996-01-360-7116
NSN 6620-01-173-3284
NSN 5960-01-177-0338
NSN 5930-00-188-8695
NSN 6130-00-181-4422
NSN 5945-01-521-6896
NSN 7035-01-007-1802
NSN 5965-01-226-7077
NSN 4140-01-133-8267
NSN 6130-01-387-6322
NSN 6645-01-597-1361