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 4140-00-126-0247
NSN 5999-00-369-7664
NSN 6650-01-293-0630
NSN 6240-00-633-1243
NSN 6105-01-236-7827
NSN 6645-01-601-5473
NSN 5960-01-107-3272
NSN 6645-01-419-1738
NSN 6130-01-647-2772
NSN 6610-01-512-2025
NSN 6320-01-230-8444
NSN 5930-01-382-9642