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 5975-01-052-3489
NSN 5945-01-442-8081
NSN 5835-00-458-4392
NSN 6105-01-607-0381
NSN 6135-00-299-6918
NSN 5935-01-613-8465
NSN 5999-00-713-9090
NSN 6320-01-116-3980
NSN 6150-01-088-5229
NSN 5920-01-150-6870
NSN 5950-01-657-2796
NSN 5915-01-347-3526