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 5960-01-649-1341
NSN 6135-01-633-8502
NSN 6110-01-381-5311
NSN 5985-01-133-2360
NSN 5835-01-227-4752
NSN 5855-00-436-3852
NSN 5998-01-050-7257
NSN 6240-00-840-8142
NSN 6105-00-875-7028
NSN 5960-01-358-2832
NSN 7035-00-115-1886
NSN 6650-01-239-6241