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 4140-01-353-9043
NSN 6110-01-547-0761
NSN 6610-01-476-7412
NSN 5945-01-120-9120
NSN 5930-00-677-5441
NSN 5895-01-447-3843
NSN 6130-01-242-9110
NSN 6150-01-561-9797
NSN 5835-01-227-2318
NSN 6105-01-588-5587
NSN 6105-00-248-5772
NSN 7035-01-517-7179