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 5915-01-295-8957
NSN 5998-01-089-9725
NSN 4140-01-351-3892
NSN 5835-01-049-5290
NSN 6220-00-060-5857
NSN 5930-00-186-0712
NSN 5996-00-879-0852
NSN 6145-00-464-0979
NSN 5960-00-790-0509
NSN 6135-01-130-3145
NSN 5835-00-187-1481
NSN 6110-00-402-0055