Toa seal

A Toa Seal also known as a Protodermis Cage is created when any six Toa of any six different elements join their Elemental Powers together. Two Toa of Fate may or may not be able to work together to make one instead of six different Elements.

Known Toa Seals
The one made by Hook's Team to seal Piraka's Team.

The one made by Hook's Team to freeze Shaller, the first time.

The one made by Hook's Team to try and freeze Shaller, but he broke free, and only his legs were sealed.