The specification of the tape consists of two layers, adhesive layer and film backing Adhesive: butyl rubber Outer layer: Special blend of stabilized polyethylene. Excellent adhesion to inner-layer tape and self Resistant to UV Can be applied over a wide temperature range Good conformability and consistent uniform thickness Easily applied with no special equipment Compatible with common pipe coatings Excellent resistance to cathodic disbonding Meets ASTM D 1000 Standard Cold applied Type T250 Total thickness 0.51 mm Elongation at Break 400% Tensile Strength 60.1 N/cm Yield Strength 45.8 N/cm Dielectric Breakdown 42 KV/mm Cathodic Disbandment 0.24 in radius 6.4 mm Volume Resistivity 2.5 x 1012 ohm.m Water Vapor Transmission Rate 0.08 gm/M2/24h Water Absorption Rate < 0.07% Color White