ProGuard HD (Corrosion Inhibitor ProGuard HD)

ProGuard HD is a concentrated fortified blend of industrial corrosion inhibitors and performance additives that are typically used to boost corrosion inhibitor levels in non-GRAS heat transfer fluids, such as OneGuard HD and other similar products. While ProGuard HD is not an antifreeze, it is compatible with both propylene and ethylene glycol, and glycerin antifreezes without inhibitors or with similar corrosion inhibitor packages. This product not only stabilizes system fluid pH but also offers corrosion protection to typical metallic and non-metallic components used in hydronic systems that contain multi-metals among them cast iron, steels, and copper. ProGuard HD is ‘generally safe’ courtesy of the low toxicity profiles (essentially non-toxic) of its GRAS & non-GRAS components. As such, it may be registered with the NSF under category code HTX-2