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 6620-01-521-6649
NSN 5990-01-605-4769
NSN 5835-01-541-9991
NSN 5925-00-968-0558
NSN 5999-01-067-0107
NSN 6130-01-484-9310
NSN 5925-00-724-9811
NSN 2925-01-348-8306
NSN 5950-00-359-9607
NSN 5996-01-646-8548
NSN 5895-01-039-1896
NSN 5945-01-388-1997