Tectyl™ 506-EH Premium solvent based corrosion preventive compound. TECTYL 506-EH is a solvent cutback, wax base, general purpose, corrosion preventive compound suitable for the widest range of application requirements for vehicle rustproofing, protection of machinery and parts in storage. TECTYL 506-EH protects parts in indoor and outdoor storage as well as domestic and international shipments. TECTYL 506-EH cures to a dark amber colored, waxy, translucent, firm film. TECTYL 506-EH is the Extra Heavy version of Tectyl 506.