The present invention relates to adhesives that are suitable for use in a broad variety of bonding applications. In particular, the present invention relates to adhesives that are suitable for use in polymer-to-metal, for example elastomer-to-metal, such as rubber-to-metal bonding applications, wherein the adhesives comprise at least one halogenated polyolefin, at least one epoxysilane having at least one terminal alkoxy silane group, at least one bis-silane, and optionally at lease one organic solvent.