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 5999-01-468-0803
NSN 5920-00-153-6941
NSN 6685-01-310-8950
NSN 5910-01-266-1996
NSN 5960-01-381-2478
NSN 6135-01-512-8740
NSN 5999-00-933-7214
NSN 6650-01-213-1231
NSN 6240-01-168-6185
NSN 6620-01-580-6681
NSN 6135-01-213-7339
NSN 4140-00-164-6832