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 5935-00-394-9903
NSN 5935-01-421-0772
NSN 5835-01-502-9228
NSN 5996-01-369-9209
NSN 5835-01-192-4165
NSN 6610-01-153-0700
NSN 2925-01-370-6898
NSN 5920-01-463-0791
NSN 5910-01-314-7227
NSN 6650-01-529-0151
NSN 6110-01-633-9660
NSN 6240-01-316-0488