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 6650-00-246-3751
NSN 5915-01-302-3244
NSN 5960-00-546-7533
NSN 5920-01-051-0090
NSN 6320-00-468-8421
NSN 5999-01-406-5216
NSN 5996-01-134-9922
NSN 6130-01-485-1857
NSN 6240-00-469-2339
NSN 5985-01-521-0300
NSN 6150-01-157-8726
NSN 5915-01-580-8337