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 5835-01-501-0526
NSN 5895-01-140-4046
NSN 5999-01-258-5868
NSN 5950-01-407-5249
NSN 5915-00-410-0807
NSN 5990-01-056-6413
NSN 6110-01-532-3306
NSN 6220-01-033-5182
NSN 6240-01-473-3781
NSN 6110-01-021-3564
NSN 5998-01-427-2327
NSN 5965-00-445-1843