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 5998-00-078-9319
NSN 5910-01-456-0305
NSN 5996-00-499-7065
NSN 5835-01-412-0344
NSN 5915-00-014-2380
NSN 5999-01-018-9346
NSN 5920-01-381-3115
NSN 5915-00-203-5860
NSN 5975-00-247-8671
NSN 5985-01-314-5759
NSN 5975-01-138-4306
NSN 5990-01-149-9228