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 6650-00-898-7262
NSN 5998-01-372-6408
NSN 5996-00-201-8861
NSN 6620-01-418-3245
NSN 5965-01-573-6523
NSN 6145-01-240-5369
NSN 6130-00-842-3813
NSN 6240-01-335-9772
NSN 5960-01-078-7692
NSN 6240-00-446-7796
NSN 5855-01-490-9694
NSN 5975-01-628-7934