3M(TM) Vibration Damping Tape 434 Silver, 4 in x 60 yd 5.5 mil 3M(TM) Vibration Damping Tapes 434 Silver, aluminum foil constraining layer coated with a pressure-sensitive viscoelastic polymer on a blue polyethylene easy-release liner. 3M(TM) Vibration Damping Tape 434, helps damp vibrations on panels and steel support members vibrating at their natural (resonant) frequency, consists of a pressure-sensitive viscoelastic polymer and aluminum foil constraining layer, effectively converts vibrational energy to negligible heat to reduce irritating noises and decrease wear and tear on parts. Wider temperature use range, -76°F to 68°F (-60°C to 20°C) appropriate for Aerospace application, meets F.A.R. 25.853 (a)