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 7035-01-320-7453
NSN 5998-01-419-5615
NSN 5975-01-227-6858
NSN 6150-01-262-5772
NSN 5998-00-194-7640
NSN 6685-01-473-0546
NSN 5935-00-208-4872
NSN 5910-01-004-3280
NSN 5835-01-459-8664
NSN 5996-01-259-1041
NSN 5935-00-362-3873
NSN 6620-00-450-9995