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 6620-01-272-7831
NSN 5960-00-908-7622
NSN 5990-01-245-7299
NSN 6105-01-416-5994
NSN 5915-01-131-6858
NSN 5960-00-423-7842
NSN 5855-01-312-5160
NSN 6150-00-740-8011
NSN 5915-01-343-0941
NSN 5996-00-243-6962
NSN 5975-01-609-8719
NSN 5998-01-364-9910