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 5975-00-428-1683
NSN 5905-01-161-9896
NSN 5930-01-468-8845
NSN 4140-00-112-0630
NSN 5990-00-611-1661
NSN 5915-01-362-0665
NSN 6685-00-959-6767
NSN 5945-01-526-5990
NSN 4140-01-158-4139
NSN 6645-01-018-7664
NSN 5985-01-649-7995
NSN 6620-01-597-0512