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 5960-01-632-6576
NSN 4140-01-023-1537
NSN 5915-00-518-1644
NSN 5915-00-289-6692
NSN 5999-00-231-7584
NSN 6150-00-258-2091
NSN 6620-00-679-5830
NSN 6685-01-104-1782
NSN 5950-01-102-9963
NSN 6105-01-228-1277
NSN 5935-00-679-1559
NSN 5915-01-482-1583