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 6110-00-740-5750
NSN 5945-01-291-6328
NSN 5950-01-227-6513
NSN 5985-01-417-2139
NSN 6130-01-317-4998
NSN 6105-01-238-2653
NSN 6105-00-596-9962
NSN 5960-01-649-1341
NSN 4140-00-289-9263
NSN 6105-01-509-8703
NSN 5910-00-407-7620
NSN 5930-01-426-7448