use sealer on pump diaphragm ?

[FISHFINK]

guys,
i have a 1988 yamaha 25hp two stroke.
yesterday i installed a new fuel pump diaphragm and gaskets. when taking the original one off, the gasket was stuck onto the mating part only in a few spots. i could tell there was no type of sealer used.

i installed the new gaskets and diaphragm i installed it dry, and when i primed the ball and started the engine it was leaking gasoline ever so slightly.
should i have used sealer on the gasket ? will it "seal itself" in time ?

thanks much

[rodbolt17]

no sealers.
occasionally we have to surface the faces to make them flat.

[FISHFINK]

no sealers.
occasionally we have to surface the faces to make them flat.

thanks for the confirmation... much appreciated