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 5998-01-504-9771
NSN 5925-01-083-3042
NSN 6145-01-589-8415
NSN 6130-01-490-0790
NSN 6645-00-334-9225
NSN 6105-01-350-9691
NSN 6650-01-214-1710
NSN 4140-01-411-4764
NSN 5835-01-478-0157
NSN 5930-01-278-9224
NSN 4140-01-319-0073
NSN 5998-00-477-9584