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 6220-01-312-6329
NSN 6620-01-169-9470
NSN 5996-01-314-9048
NSN 5935-01-123-4162
NSN 6130-01-069-6698
NSN 5835-01-394-7589
NSN 5960-01-628-2760
NSN 5985-01-393-4452
NSN 5965-01-182-2556
NSN 6650-01-450-3158
NSN 5855-01-502-6414
NSN 5965-01-434-8759