Bostic BluTack

BLU-TACK is a non-reactive, resistive damping polymer which behaves like a tacky, flexible, semi-liquid when being handled but like a solid at audio frequencies. It comes in thin flexible sheets that can be cut up or pulled apart as needed. It provides excellent mechanical energy transmission properties at audio frequencies even though it is a semi solid.

It is used primarily between the top plate of loudspeaker stands and the bottom of loudspeakers. This mechanically couples the loudspeaker to the stands much like spikes would but without damaging the loudspeakers. The BLU-TACK will take a "set" after a few hours and adhere to both surfaces preventing the speakers from shifting on the stands if knocked. BLU-TACK can be removed by rotating the loudspeaker on the stands to break the seal. BLU-TACK is reuseable and has many other uses such as holding up posters, cards or photos on a wall. It also holds screws to the tip of screwdrivers or holds parts while soldering. One package is enough for a multitude of uses.