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 6150-01-516-7072
NSN 5915-00-847-1074
NSN 6110-00-669-6726
NSN 5925-00-925-3689
NSN 5920-00-233-7366
NSN 5920-00-258-2467
NSN 5975-00-255-2441
NSN 5990-00-530-3855
NSN 5996-01-423-9423
NSN 6220-01-357-3672
NSN 6145-01-226-5010
NSN 5835-00-523-0736