composition is homogenous some embodiments are provided in a tube while other embodiments are provided in a dispenser or canister for embodiments that are provided in a tube such as a caulking tube no propellant is required referring to fig2 for embodiments that are dispenser based the composition is prepared by adding the styrene ethylene butylene styrene copolymer 10 and adding the solvent diethyl ether 12 into a mixer and mixing 14 if the mixture isn 39 t clear 16 and isn 39 t homogeneous repeat the mixing 14 until the mixture becomes clear and homogeneous when the mixture is clear and homogenous 16 the higher boiling point solvent e g petroleum ether is added 18 and mixed 20 until the composition is homogenous the composition is then transferred to a canister 22 and charged 24 with a suitable amount of the propellant such as propane n butane isobutene or dimethyl ether and then sealed 26 the seal is provided with a means to selectively release the contents nozzle valve upon operation of the means to selectively release pressure in the dispenser canister expels a strand of the composition onto into a target crack crevice gap etc and the composition expands to fill the target crack crevice.