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 5920-01-573-7609
NSN 5960-00-728-5209
NSN 5996-01-121-7395
NSN 5905-00-865-8223
NSN 6240-00-474-5809
NSN 5998-00-023-0653
NSN 5835-01-343-7516
NSN 5905-01-601-6653
NSN 6645-00-394-8924
NSN 5915-01-123-4208
NSN 6220-01-336-5053
NSN 5835-01-371-8759