CNC Lathe Programmer/Operator. About Us. Family-owned and operated in Alsip, Illinois since 1963, Kastalon Polyurethane Products prides itself on taking polyurethane manufacturing to a whole new level. Kastalon has built a solid reputation of problem solving by engineering unique blends of polyurethane to achieve exceptional physical properties. Renowned for providing our clients with design and engineering support, we not only make polyurethane ...