404 Tooling Polyester Resin is a premium isophthalic polyester resin engineered for applications requiring maximum strength, durability, and heat resistance. Compared to standard orthophthalic resins, 404 offers lower shrinkage, higher heat distortion temperature, and excellent chemical resistance. Includes MEKP Catalyst

This resin is widely used in fiberglass mold construction, boat hull fabrication, high-strength laminates, and applications requiring superior mechanical properties.