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 6150-01-498-0252
NSN 5975-01-025-3602
NSN 6145-01-371-5176
NSN 4140-01-623-2245
NSN 5950-01-580-2034
NSN 6650-01-359-1770
NSN 5935-00-802-6382
NSN 5930-01-302-3309
NSN 5975-01-085-6979
NSN 6320-01-388-1067
NSN 6240-01-358-0064
NSN 6220-00-999-1911