Abstract: A method for determining elastomer types as pipe filler for pressure bending of a pipe, comprising: selecting a set of elastomer types; obtaining sample pieces from the elastomer types; applying strain test on the sample pieces; determining properties of the sample pieces; calculating strain energy and error function for each sample piece based on an energy model; calculating elastic modulus for each sample piece; selecting elastomer types from the set of elastomer types; analyzing results from the calculation of strain energy, error function and the elastic modulus for the selected elastomer types; simulating the pressure bending process of the pipe, using pipe filler made from the selected elastomer types; and when simulation results indicate an acceptable pressure bent pipe due to the simulated pressure bending, selecting the one or more elastomer types associated with the acceptable pressure bent pipe for the pipe filler.