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 6620-01-549-6653
NSN 5965-00-179-7886
NSN 5975-00-419-9812
NSN 6320-01-308-0009
NSN 5855-00-631-4565
NSN 7035-01-252-1539
NSN 6150-00-269-8447
NSN 5985-01-263-0375
NSN 5835-00-284-0882
NSN 6105-00-095-6138
NSN 5985-01-246-2582
NSN 5960-00-226-6543