Bulb Seal Install Question

Hello. I'll be installing the Trim Lok seal shown in the attached photo for use in the door jamb for the door to close up against. There's a lip (a rib) I've created in the jamb for the "U" shape of the seal to snap over.
My question is should there be caulk used in the U shape (like ProFlex) or is it just a dry fit , snapping it over the rib?
thanks
John
My question is should there be caulk used in the U shape (like ProFlex) or is it just a dry fit , snapping it over the rib?
thanks
John