Venture Tape 1540CW Cold Weather All Service Jacket (ASJ) Insulation Tape is primarily used as a closure system and vapor seal on ASJ faced duct and piping systems. White Kraft/Scrim/Foil lamination with 4 x 4/sq.in. (2.5 x 2.5 cm) tridirectional scrim reinforcement. Special cold weather acrylic adhesive system that combines superior quick stick at normal temperatures with superior low temperature performance down to –25°F (–32°C). Excellent at normal and high temperatures also.