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 6145-01-579-3510
NSN 6320-01-530-0588
NSN 5945-01-644-9900
NSN 6240-01-368-3280
NSN 5945-00-183-8607
NSN 4140-01-383-0370
NSN 6150-01-582-7978
NSN 6220-01-323-7056
NSN 6105-01-447-5129
NSN 6645-00-888-5820
NSN 6240-01-194-2206
NSN 5855-01-138-4985