At present, solvent‐resistant rubbers are obtained only by the introduction of polar groups in the polymer chain. These groups impair some physical properties of the rubber. A new way is suggested for obtaining solvent‐resistant rubbers by using nonpolar elastomers compounded with metallic soaps. These soaps can be considered polymeric materials, whose long chains are built up by weak coordinate bonds, which can be easily broken and reformed in contact with solvents. In this way a layer of solvent‐swollen soap is formed over the soap‐compounded vulcanizate, which prevents further attack. An explanation of the above behavior is given on the basis of the crystallization tendency of the metallic soap.