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 5950-01-577-8485
NSN 5915-01-408-0633
NSN 4140-01-005-0154
NSN 5950-00-529-6871
NSN 6110-01-259-4402
NSN 5999-01-631-7664
NSN 6650-00-468-7823
NSN 5915-00-034-4824
NSN 5930-01-370-0266
NSN 5905-01-487-4374
NSN 5855-01-338-1718
NSN 5920-00-567-4100