As it turns out, Boruto and Kawaki were able to team up rescue the Seventh Hokage. ... After the two synced up their powers, Naruto was rescued from the sealed container, and Boruto was left shocked by his dad's condition.

What episode does Naruto get sealed?

"The Broken Seal" (解放された封印, Kaihō Sareta Fūin) is episode 16 of the original Naruto anime.

Does Naruto lose the seal?

Naruto did lose the seal and the power to magically heal others. Naruto basically has very little six paths chakra left and there is not enough to use to transform to it. This is why Naruto does not use it or the truthseeker orbs after the fight with Sasuke.