3M 431 Foil Tape 1 in x 5 yd Silver

3M 431 Silver Foil Tape

This 3M 431 foil tape suits HVAC technicians and maintenance crews sealing ductwork, joints and seams in heating, ventilation and air-conditioning systems. The aluminum backing conforms to irregular surfaces indoors or outdoors. It serves automotive, aviation, construction and electronics shops needing a reliable thermal seal.

Temperature range from -65 to 300 degrees F

The tape maintains adhesion and structural integrity across a continuous range from -65 to 300 degrees F. Aluminum construction resists degradation during sustained exposure to heat or cold cycles. Performance stays consistent under prolonged thermal load rather than brief spikes.

Simple hand application on clean metal

Apply by hand onto clean, dry metal surfaces; the pressure-sensitive adhesive bonds without tools or heat guns. Dirt, oil or moisture on the substrate is the usual cause of poor adhesion. The continuous roll lets you cut exact lengths for each joint.