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 5965-01-424-0542
NSN 6610-01-080-3572
NSN 5925-01-612-8995
NSN 6110-00-850-2860
NSN 6610-01-524-0636
NSN 7035-01-554-1448
NSN 5835-01-302-6844
NSN 5935-01-198-4179
NSN 6150-01-470-8188
NSN 6240-01-657-2378
NSN 5945-00-597-5722
NSN 6150-00-621-0531