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 5950-00-532-2529
NSN 5975-00-482-7386
NSN 5965-01-578-7378
NSN 5895-01-327-4153
NSN 5998-01-382-8149
NSN 5999-01-171-8915
NSN 6150-01-096-0403
NSN 5915-01-370-9762
NSN 6110-01-456-1985
NSN 5960-00-448-0417
NSN 4140-01-172-1295
NSN 2925-01-495-7170