Cosmoline RP-342 Black Rust Preventive Spray (Military-Grade)

Introducing our Rust Preventive Aerosol -- the strongest, longest-lasting, and fastest-drying option available, period! With just one coat, this product can effectively protect any metal, steel, or iron surface, whether it's parts, equipment, tools, or machinery, for years to come, both indoors and outdoors.

It's durable and tough, guaranteed not to crack, craze, blister, run, or wash off. Our RP-342 formula creates a dry-to-the-touch, non-tacky, amber-black petroleum wax coating that not only conceals unsightly surfaces but also withstands long-term exposure to salt spray, extreme temperatures, and other harsh environments.

Application is a breeze -- simply spray onto a dry surface and let it dry for about 25 minutes. It's that easy!

Trusted since WWII, our product has been relied upon by the U.S. Armed Forces, government agencies, commercial companies, and DIYers/consumers for generations.

With thousands of applications in commercial and private industries, one of the most popular uses is vehicle undercoating. Our product easily handles road salt, chemicals, and debris, providing long-lasting protection that won't wash off like other undercoating products. One application is all it takes to safeguard your vehicle for years to come.

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