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 6320-01-434-6861
NSN 5910-01-337-3588
NSN 5935-01-577-0105
NSN 5945-01-486-8251
NSN 5920-01-614-5983
NSN 4140-01-218-5919
NSN 6240-01-399-0343
NSN 5985-01-557-1395
NSN 5920-00-307-6789
NSN 6105-01-092-1484
NSN 6145-01-286-3199
NSN 6240-01-210-4217