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 4140-01-508-6242
NSN 4140-01-525-7692
NSN 5998-01-462-1891
NSN 6220-01-339-9663
NSN 5950-00-135-7784
NSN 5945-01-342-7941
NSN 6105-01-457-9486
NSN 6220-01-372-9226
NSN 6650-01-068-3687
NSN 6220-00-066-6457
NSN 5999-00-787-8326
NSN 4140-00-453-3818