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 5998-01-525-7452
NSN 5895-01-038-3344
NSN 5930-01-545-7630
NSN 5920-01-398-6683
NSN 5960-01-375-6815
NSN 5935-01-145-3384
NSN 6105-01-287-6780
NSN 6645-01-056-9296
NSN 5855-00-560-0110
NSN 6150-01-447-3640
NSN 6145-01-602-9331
NSN 2925-00-341-3336