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Permatex Super 300 Form-A-Gasket Sealant is a non-hardening sealant designed to resist heat transfer fluids such as oil or antifreeze. Temperature range -65 degree fahrenheit to 400 degree fahrenheit, resists antifreeze, aviation fuels, high-detergent oils and lubricants. When a chemical gasket is not an option, Permatex offers a wide range of gasket sealants suitable for applications on both import and domestic vehicles of any model year or performance caliber. To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.


