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 6135-01-313-8323
NSN 6130-01-134-9689
NSN 5965-01-133-7459
NSN 5895-00-909-6072
NSN 5915-00-256-0040
NSN 6110-01-349-5360
NSN 5975-01-179-7728
NSN 5835-01-242-9806
NSN 5998-00-291-9187
NSN 6105-00-249-8803
NSN 5915-00-365-9951
NSN 5945-01-085-5777