The phrase 'a seal for' is correct and usable in written English.
You can use it to refer to an agreement or promise that a seal has been placed on something as a sign of approval, guarantee, or verification. For example, "The king placed a seal for his approval on the treaty document."
The emblematic characters cast on Shang dynasty bronze vessels (13th 11th century bc) imply the use of something like a seal for impressing on the mold.
After the sack of Rome he returned to Florence and in 1528 worked in Mantua, making a seal for Cardinal Gonzaga (Episcopal Archives of the City of Mantua).
Tells about the duties of the Justices; their travels, etc. Tells how the Justices plunged into the labor of choosing a seal for the Court.
Then I gravitated towards capturing the animals and, so, going up to a seal for the very first time and touching one was my happiest moment.
Used since the 13th century as a seal for private letters and since the 15th century for papal briefs, it is one of two papal seals, the other being the leaden bull (bulla).
An enormous papal ring called the Fisherman's Ring made of gilded bronze and bearing the image of St. Peter fishing is traditionally used by the pope as a seal for pontifical documents.
loan is expected to act as a seal of approval for others, after the I.M.F.
"A network could be viewed as a seal of approval for content," says Fader.
The tank also acts as a vacuum seal for a cooling system and so the cryostats for the windings do not need to have vacuum layers.
This paper presents a seal technology for linear fluidic microactuators based on ferrofluids.
These bastards are so intense they'll beach themselves to get a seal just for a goddamn challenge.
