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 5835-01-552-3153
NSN 5925-01-609-9826
NSN 6650-01-467-2355
NSN 5925-01-067-8301
NSN 6650-01-044-5431
NSN 5950-01-423-9397
NSN 5999-01-067-9504
NSN 6150-00-708-9906
NSN 5895-00-155-8581
NSN 6645-01-395-4129
NSN 5999-01-218-6146
NSN 4140-01-079-6886