Penetrol CIP is a highly effective bright red/brown primer for rusted surfaces with the outstanding penetrating properties of Penetrol...better than water. It makes a secure based on hand-clean steel for any type of paint including 2-part Epoxy, Urethane, Vinyl, Chlorinated Rubber and conventional finishes. Granular or tightly bonded rust need not be removed. High in solids, Penetrol CIP is economical and an excellent all weather and general maintenance primer for all metals. Penetrol CIP penetrates deeply into the metal surface and bonds granular rust into a tough, protective coating. Unlike conventional primers, Penetrol CIP does not 'bridge' over the many imperfections present on any steel surface, but fills every pinhole, driving out air and moisture...the 'food' rust needs to grow. Penetrol CIP has excellent resistance to water immersion and condensation and helps in descaling heavy rust deposits. It is highly flexible, will not flake, crack or peel and does not need sanding prior to top-coating. Use Penetrol CIP on all rusted and corroded surface where a tough flexible prime is needed under all types of conventional and synthetic coatings, Penetrol CIP is also a perfect protective coating on its own or as an undercoat on new steel. It performs well even when difficult drying conditions exist such as in relative high humidity or low temperatures.