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 6645-01-083-4759
NSN 5925-01-486-3276
NSN 5915-00-891-4072
NSN 5999-01-065-2785
NSN 4140-01-634-0330
NSN 6650-01-421-2370
NSN 5915-00-929-3223
NSN 6240-01-379-5779
NSN 5915-00-181-5876
NSN 6110-01-345-6626
NSN 6220-01-400-4203
NSN 5945-01-042-9672