From our start in 1924 as a one-product company focused on the emerging automotive aftermarket, Radiator Specialty Company has grown into a modern, diversified manufacturer of a full line of specialty automotive products. Today, we make over 300 automotive products under many well-known and well-respected names, including Solder Seal®, Gunk®, Liquid Wrench®, Engine Brite®, Puncture Seal™ to name a few. Company-wide, we produce over 3000 products for automotive, heavy duty, plumbing, hardware, and export markets.

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