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 6130-00-199-9545
NSN 6105-00-506-8405
NSN 5915-01-458-0836
NSN 6220-01-562-2143
NSN 5960-01-537-8161
NSN 6105-01-096-1125
NSN 5935-01-543-6816
NSN 5835-01-233-7033
NSN 5855-00-631-4565
NSN 6240-01-469-2957
NSN 6240-01-455-7903
NSN 6105-00-852-8197