Pipe Insulation, Insulation Body Material EPDM, Type - Pipe Insulation Flexible, Wall Thickness - Insulation 3/8 in, Insulation Length 6 ft, Fits Tube Size 3/8 in, Insulation Nominal I. D. 3/8 in, Insulation Temp. Range -297 Degrees F to 300 Degrees F, Insulation Approx. R Value 1.53, Insulation Approx. K Value 0.25, Color Black, Standards ASTM E84, UV Resistant, ASTM E96, D635, C692 Non Corrosive, ASTM C534, Flexibility