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 6150-01-279-3750
NSN 6145-01-581-6020
NSN 5920-00-665-3973
NSN 5895-01-067-8771
NSN 5975-01-239-1832
NSN 5999-01-603-0181
NSN 2925-00-452-6403
NSN 5945-00-060-3842
NSN 6105-01-430-5401
NSN 5915-00-226-6863
NSN 5960-01-293-4536
NSN 6135-01-067-8331