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 4140-00-142-2491
NSN 6240-01-394-8592
NSN 6150-01-425-0611
NSN 6110-01-197-2905
NSN 6620-01-506-1003
NSN 5965-00-285-0745
NSN 6240-01-205-4784
NSN 6130-01-323-7051
NSN 6110-01-149-4214
NSN 5930-00-579-6327
NSN 6220-01-555-8332
NSN 6105-00-182-5162