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 5965-01-422-4823
NSN 5998-00-836-7315
NSN 6105-01-174-0899
NSN 5835-01-094-0926
NSN 5996-01-359-0057
NSN 5945-01-561-6095
NSN 4140-01-359-2643
NSN 5990-01-365-6016
NSN 5975-00-024-9013
NSN 2925-01-018-6725
NSN 6110-01-369-5561
NSN 5930-01-629-0111