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 5920-00-276-8657
NSN 5960-01-466-4153
NSN 5910-01-170-4002
NSN 5960-01-599-9821
NSN 5960-01-013-9346
NSN 5965-01-262-3513
NSN 4140-01-278-1310
NSN 5945-01-504-3740
NSN 6130-01-634-0603
NSN 6645-01-396-6976
NSN 5895-00-611-8109
NSN 6130-00-621-7997