9900 Rust-O-Thane® is intended for application on metals which are coated with Rust-Oleum® or Mathys® epoxy systems, but can also be applied directly to metal. Can be applied by spray, roller and brush application. Assures appropriate protection against strong chemicals, acids, alkalis and solvents; frequent product spillage and chemical cleaning; high humidity and moist conditions. Especially recommended when weather resistance is required.