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 4140-00-187-6086
NSN 6610-00-722-7472
NSN 5965-01-633-8849
NSN 5945-01-050-9172
NSN 6150-00-227-6651
NSN 6135-01-238-2878
NSN 6135-00-422-3967
NSN 5915-00-951-9617
NSN 6645-00-144-4868
NSN 5895-01-057-3968
NSN 2925-01-384-4139
NSN 6620-01-461-3550