VIBRACURE A 125 is a high molecular weight polyester diol curative which can be used to cure polyurethane prepolymers. It is especially useful when blended with 1,4-Butanediol in various proportions to obtain a range of hardnesses from a single polyester-MDI prepolymer. VIBRACURE A 125 provides variable resilience and good abrasion resistance for the vulcanizates. It can produce materials having FDA approval for use with wet foods. As a curative, VIBRACURE A 125 provides advantages over other curatives for the advanced materials industry as the materials cured with it have significantly better tear strength and softer properties without using plasticizers.