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 5930-01-524-2776
NSN 2925-00-902-3881
NSN 5985-00-913-3052
NSN 5920-01-366-4543
NSN 6105-00-098-5516
NSN 5855-01-162-5251
NSN 6650-00-054-4721
NSN 6320-00-456-2092
NSN 6130-00-114-0578
NSN 5999-01-560-4733
NSN 5998-01-333-1689
NSN 5920-01-330-0486