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 5920-01-278-6508
NSN 6620-00-486-0472
NSN 6150-00-970-5206
NSN 6145-00-060-9097
NSN 6145-00-539-9799
NSN 6105-01-461-1785
NSN 5855-01-547-6918
NSN 5905-00-145-5568
NSN 5950-00-218-1362
NSN 6150-00-764-5809
NSN 5920-01-290-3771
NSN 6105-00-174-2911