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 5915-01-335-7233
NSN 5999-01-032-3052
NSN 5835-01-213-0833
NSN 5998-01-203-1948
NSN 6135-01-614-5335
NSN 6320-01-082-2970
NSN 5960-01-279-2589
NSN 6620-01-202-7415
NSN 6645-01-556-5263
NSN 6610-00-938-0161
NSN 4140-00-883-7409
NSN 6650-01-246-8262