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 5996-01-562-2370
NSN 5996-00-592-2086
NSN 5910-00-644-6204
NSN 5895-00-997-6208
NSN 6320-00-674-1361
NSN 5998-00-417-9753
NSN 5935-00-194-6589
NSN 6130-01-511-0996
NSN 6620-01-076-1340
NSN 6620-00-165-1749
NSN 5935-00-639-1382
NSN 5935-01-574-6491