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 5945-01-323-7894
NSN 4140-01-479-8654
NSN 6135-01-465-0829
NSN 6150-00-899-0013
NSN 5835-01-150-6084
NSN 5895-00-772-0640
NSN 5996-01-023-7896
NSN 6645-00-133-1536
NSN 5975-01-075-3393
NSN 5965-01-473-4296
NSN 5915-00-770-2563
NSN 6110-00-618-4171