Usage patterns
見せ掛けの〈事〉a sham/pretend ~
That was nothing but a sham peace.
見せ掛けだけjust for show, only on the surface
His kindness was only for show.
見せ掛けにすぎないto be nothing more than a pretense
Her smile is nothing more than a pretense.
見せ掛けを見破るto see through a pretense
I quickly saw through his pretense.