Pipe Insulation, Flexible, Temp. Range -297° to 300°F, Color Black, Material EPDM and Standards ASTM E84, UV Resistant,ASTM E96,D635, C692 Non Corrosive, ASTM C534, Flexibility; Varies by Insulation Nominal I.D., For Tube I.D., For Tube O.D., For Iron Pipe Size and Wall Thickness