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 6105-01-451-1864
NSN 5930-00-582-1730
NSN 5996-00-109-5986
NSN 5975-01-387-6925
NSN 2925-01-461-4347
NSN 5998-01-260-8722
NSN 5996-01-445-7284
NSN 5990-00-159-1774
NSN 5915-01-338-6431
NSN 4140-01-396-7521
NSN 5990-01-042-1984
NSN 5945-01-065-3710