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 5935-00-031-0993
NSN 5975-01-599-4092
NSN 6645-01-611-9391
NSN 5835-01-352-7211
NSN 5965-01-294-7522
NSN 5925-01-398-1202
NSN 6610-01-647-7412
NSN 5915-00-038-8218
NSN 5925-00-752-4110
NSN 5960-00-359-7768
NSN 5999-01-633-2280
NSN 5998-00-868-2645