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 5905-00-389-6252
NSN 6650-01-521-5903
NSN 5960-00-285-1001
NSN 5996-01-157-1857
NSN 6645-01-612-6885
NSN 5990-01-395-4194
NSN 5950-01-500-8928
NSN 5855-01-426-5589
NSN 5985-00-204-4716
NSN 6650-01-249-3201
NSN 6135-00-643-4843
NSN 6135-01-395-6693