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 6145-00-679-6470
NSN 6220-00-980-2399
NSN 6650-00-862-7143
NSN 5975-01-233-0684
NSN 6320-01-560-7177
NSN 5965-00-789-1654
NSN 2925-00-063-0788
NSN 5855-01-083-9053
NSN 5998-01-604-9812
NSN 5985-01-553-5032
NSN 6105-01-047-9117
NSN 5855-01-295-2313