Featuring a tape form that is non-oxidizing to metals. This superior product is a 40% cork-filled, non-curing butyl rubber tape. It bonds to metals, glass and plastics. Features and BenefitsNon-asphalt basedNon-dryingEasy to useResistant to water, acid vapors 100 ppm, alcohols and saltEliminates moisture vapors and condensation on cold line surfaces, while insulating against heat