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 6145-00-278-0697
NSN 5945-01-634-0588
NSN 6320-00-937-5625
NSN 6320-01-498-4954
NSN 5835-01-302-6844
NSN 4140-01-369-2959
NSN 5945-00-993-2150
NSN 6240-00-456-2578
NSN 6240-00-434-3771
NSN 5925-00-945-1118
NSN 6105-00-089-0232
NSN 5920-00-823-0969