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 6650-01-408-5089
NSN 5975-00-009-8718
NSN 5910-00-615-0744
NSN 5990-01-254-2936
NSN 5999-01-065-5498
NSN 5999-01-476-7668
NSN 5975-00-067-5236
NSN 5920-01-424-0745
NSN 5945-01-073-2556
NSN 5990-01-065-0492
NSN 6620-00-248-6950
NSN 5998-01-047-9994