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 5990-00-629-2794
NSN 5905-01-018-3465
NSN 6645-01-032-5337
NSN 5835-00-170-5238
NSN 5998-01-412-1656
NSN 5996-01-383-7298
NSN 5835-00-770-2843
NSN 6105-01-172-0214
NSN 7035-01-162-7452
NSN 5950-00-964-9949
NSN 5910-01-323-6139
NSN 5945-01-553-2186