Five Elements Seal

Five Elements Seal is a technique which produces a powerful seal that is used to block or disturb the target's chakra flow.

Semoiya Secoiya of the Secoiya clan taught this to Orochimaru, before the snake slaughtered the Secoiya clan. Sachi Urami was also taught this to Orochimaru before his eventual death.

Usage
Once the seal is completed, the target will become unconscious and unable to fight for a short time. Orochimaru performed this technique to tamper with Naruto Uzumaki's seal. The original seal allowed a small amount of the Nine-Tails' chakra to always mix into Naruto's, but the additional seal disturbs this, preventing Naruto from using the Nine-Tails' chakra or even controlling his own chakra properly. This is because an odd-numbered seal creates an imbalance when placed on top of an even-numbered seal. When Orochimaru later notices that the seal has been removed, he remarks that there are very few ninja capable of doing so, like Jiraiya.

Trivia

 * The "Five Elements" referred to in the name of this technique are the Chinese Five Elements, the :
 * and ,
 * and ,
 * and ,
 * and ,
 * and ,

instead of the five chakra elements used in most other techniques, the :
 * and.
 * and.
 * and.
 * and.
 * and.

This suggests the elements are merely symbolic.