The word(s) "seal" appears 16 time(s) in 16 verse(s) in Quran in Muhammad Pickthal translation.

(1) Allah hath sealed their hearing and their hearts, and on their eyes there is a covering. Theirs will be an awful doom.

(2) Then because of their breaking of their covenant, and their disbelieving in the revelations of Allah, and their slaying of the prophets wrongfully, and their saying: Our hearts are hardened - Nay, but Allah set a seal upon them for their disbelief, so that they believe not save a few -

(3) Say: Have ye imagined, if Allah should take away your hearing and your sight and seal your hearts, Who is the Allah Who could restore it to you save Allah? See how We display the revelations unto them! Yet still they turn away.

(4) They are content that they should be with the useless and their hearts are sealed, so that they apprehend not.

(5) The road (of blame) is only against those who ask for leave of thee (to stay at home) when they are rich. They are content to be with the useless. Allah hath sealed their hearts so that they know not.

(6) Such are they whose hearts and ears and eyes Allah hath sealed. And such are the heedless.

(7) Then We sealed up their hearing in the Cave for a number of years.

(8) Thus doth Allah seal the hearts of those who know not.

(9) Muhammad is not the father of any man among you, but he is the messenger of Allah and the seal of the Prophets; and Allah is ever Aware of all things.

(10) This day We seal up their mouths, and their hands speak out to Us and their feet bear witness as to what they used to earn.