Sound Absorbing Acrylic PE Foam Double Sided Tape 2mm 3mm for Battery Pack Sealing Product Overview This Sound Absorbing Acrylic PE Foam Double Sided Tape is built for the acoustic and sealing side of battery pack assembly. A compressible acoustic grade PE foam core is combined with a high tack acrylic adhesive on both faces, so the tape simultaneously decouples vibration , reduces structure borne noise and forms a continuous moisture barrier between the protection board,