Abstract: A two part adhesive/sealant composition is provided, wherein component A contains at least one silane-terminated prepolymer, at least one silane crosslinking catalyst, and at least one low molecular weight organofunctional silane and component B contains at least one silane-terminated prepolymer, water and at least one water-dissolving and/or water-adsorbing agent such as an organic or inorganic thickener. Such compositions are exceptionally insensitive to mixing and dosing errors in use and are useful for forming elastic bonds between substrates.