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 5935-01-075-7521
NSN 5905-01-250-2608
NSN 5990-00-226-1152
NSN 5996-01-127-5431
NSN 6145-01-069-0813
NSN 5950-01-381-7606
NSN 5998-00-221-7007
NSN 5920-01-397-5598
NSN 5920-01-108-8256
NSN 5999-00-293-9788
NSN 5895-01-127-4798
NSN 5925-01-456-0577