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 5998-01-021-7378
NSN 5990-01-468-1292
NSN 5990-01-031-7599
NSN 5990-01-478-8638
NSN 4140-01-061-0440
NSN 6240-01-573-7036
NSN 5945-01-473-6849
NSN 4140-00-245-2715
NSN 5945-01-203-6042
NSN 6105-01-442-3465
NSN 5998-01-416-7472
NSN 4140-00-252-0879