a plastic closure for dispensing thixotropic fluids from a flexible bottle . the closure has a bottom part including a cover surface with a spout opening beneath the cover surface a support surface in which several axially extending through - passages are disposed , which are radially offset relative to the spout opening . the support surface includes partial elements in the form of tongues , which are integrally formed on an annular jacket wall by way of integral hinges which engage in a pin in the installed state . this results in a closure that can be manufactured particularly inexpensively , is simple to install , and can be produced in one piece .