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 5985-01-132-7016
NSN 6220-01-274-7788
NSN 6110-01-030-9457
NSN 5915-00-370-4813
NSN 5915-01-464-4926
NSN 5998-01-264-9368
NSN 5996-01-260-7371
NSN 5975-00-422-0613
NSN 6105-01-246-2210
NSN 5999-00-112-4155
NSN 6145-01-556-7082
NSN 6650-01-318-7339