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 5998-01-547-5404
NSN 5895-00-877-3432
NSN 5998-00-549-5513
NSN 5996-00-300-4499
NSN 5895-01-630-5811
NSN 5895-01-469-2900
NSN 5998-00-971-3892
NSN 6130-01-317-7220
NSN 6620-01-616-6008
NSN 5915-00-814-2860
NSN 6105-01-634-0322
NSN 6150-01-633-4918