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Orr-lac is an industry leader in chromate conversion products. Our selection of Orr-lac primers are designed to prevent corrosion on your aircraft’s aluminum surfaces. Try our Orr-lac 343 yellow zinc chromate primer on your aircraft! This simple primer is specially formulated for surface-treated aluminum or on surfaces with a pre-treatment coating in compliance with MIL-C-8514. Orr-lac zinc chromate paint may be top coated or used alone for powerful corrosion resistance. This 11-ounce can of Orr-lac 343 conforms to TT-P-1757A regulations. Its 15 to 30 minute dry time makes regular maintenance a breeze. Create a decorative finish while protecting your aircraft’s metal from oxidation and corrosion while saving money. Our yellow zinc chromate is designed for use on machinery, tools and other hardware for long-term protection and an enhanced finish.