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 5930-00-704-9786
NSN 5910-01-441-7815
NSN 5975-01-289-7093
NSN 5990-01-481-3080
NSN 6620-00-930-5615
NSN 5905-00-518-1708
NSN 5996-01-306-7160
NSN 5999-01-501-8522
NSN 5998-01-381-0092
NSN 5905-00-447-0706
NSN 6130-00-758-7435
NSN 6105-01-541-6230