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 6150-01-473-6842
NSN 6620-00-553-8854
NSN 5895-00-827-0240
NSN 6650-01-326-7305
NSN 6650-01-596-4780
NSN 5950-00-472-5194
NSN 6110-01-308-0049
NSN 6320-00-476-6898
NSN 7035-00-703-3535
NSN 5998-01-432-9831
NSN 5950-01-233-9827
NSN 6320-01-246-4390