Caswell permanently repairs steel, aluminum, fiberglass and plastic gas tanks! Phenol Novolac Epoxies are a new breed of chemical resistant materials, able to withstand permanent immersion of many harsh solvents, fuels, and oils. This Epoxy has much better bond strength than single component products with strengths of up to 3000 PSI, and this higher strength reduces the need for a clinically clean surface as the epoxy actually prefers to bond to a rough rusty surface. Our new phenol novolac is more thixotropic, which means it 'hangs' on the tank walls during the coating process. This gives a thicker overall coating providing superior protection over the competition. Please see the detailed description for more information.