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 5965-00-258-6809
NSN 2925-01-501-1104
NSN 5920-00-421-0991
NSN 5895-01-477-8121
NSN 5999-01-381-7682
NSN 6320-01-255-2096
NSN 5999-01-603-2848
NSN 5998-01-046-2433
NSN 6320-01-141-3791
NSN 6620-00-043-6082
NSN 6130-01-429-9041
NSN 4140-00-618-4213