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 6685-01-373-7979
NSN 5996-00-568-8288
NSN 5895-00-629-1976
NSN 5998-01-209-9131
NSN 7035-01-476-7787
NSN 5960-01-462-1864
NSN 5998-00-410-3526
NSN 6150-00-252-2316
NSN 5990-00-202-5127
NSN 6620-00-257-2783
NSN 6130-00-797-6187
NSN 6645-01-651-9562