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 6105-01-183-1624
NSN 6145-01-037-0235
NSN 4140-01-069-9028
NSN 5999-01-391-7152
NSN 5960-00-529-2704
NSN 4140-01-591-0004
NSN 5996-01-017-1309
NSN 5930-01-045-2096
NSN 5960-01-553-4557
NSN 4140-01-441-1870
NSN 5990-01-116-2181
NSN 5998-00-106-3059