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 5998-01-139-6720
NSN 5998-01-211-4307
NSN 5950-00-216-7548
NSN 6650-00-012-2430
NSN 6145-01-028-3803
NSN 5920-01-371-2869
NSN 5945-01-336-8559
NSN 6220-01-317-8069
NSN 5950-00-827-8604
NSN 5855-01-632-5485
NSN 6135-00-299-6918
NSN 6110-01-392-8049