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 7035-01-622-2772
NSN 6105-01-381-1088
NSN 6240-00-504-2531
NSN 5915-00-274-2282
NSN 6220-01-227-1917
NSN 5960-01-380-0885
NSN 4140-00-008-7638
NSN 5996-00-841-1862
NSN 5935-00-917-6799
NSN 5925-01-447-9767
NSN 5998-01-072-1574
NSN 5925-01-469-6667