3M damping aluminum foam sheet 4014 is a vibration and noise reduction material provided in sheets for excellent per-pound cost ratios. Open cell polyurethane foam with an aluminum-urethane constraining layer absorbs panel vibration and dissipates it to negligible heat, reducing resonant noise and fatigue. Pressure sensitive adhesive and easy release liner make for fast, smooth application. Form sized for applications with larger damping areas, our 3M damping aluminum foam sheet 4014 attenuates and reduces the resonant sound and vibration in thin sheet metal, plastic panels and support structures. It features a 250 mil open cell polyurethane foam with a 3 mil aluminum-urethane backing. It applies quickly and easily to the vibrating component by a strong, pressure sensitive acrylic adhesive - only finger pressure is required to establish a lasting bond. The foam absorbs the vibration or "strain energy" and together with the backing dissipates it into a small amount of heat. This function reduces continuous vibration through attenuation, which reduces noise and decreases metal fatigue during everyday wear. It also limits vibration caused by impact, helping components remain strong and stable over time. Meets F.A.R. 25.853(b). Since 1925 when one of our lab assistants invented masking tape, 3M has been applying science to life - developing adhesive products and technologies that help entire industries and individual businesses worldwide. This applies especially to our damping products like 3M damping aluminum foam sheet 4014 - delivering the science behind vibration and sound reduction to help businesses like yours operate faster, better and more efficiently.