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 5905-01-228-0542
NSN 7035-01-232-2657
NSN 6130-01-364-0894
NSN 6105-01-069-9190
NSN 6645-01-467-9983
NSN 2925-01-248-6028
NSN 5905-01-516-5821
NSN 6150-00-089-7267
NSN 6145-00-144-0918
NSN 6105-00-453-1949
NSN 6220-01-432-4021
NSN 6650-01-492-9525