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 6320-00-731-6134
NSN 5975-00-398-9716
NSN 5835-00-233-6327
NSN 6145-01-200-5020
NSN 7035-01-036-0236
NSN 6105-00-998-7281
NSN 5996-01-348-6484
NSN 6105-01-607-6572
NSN 5910-01-473-9181
NSN 5999-01-530-6902
NSN 6150-01-335-5496
NSN 6145-01-430-2487