The MPC315 is a 465 x 300 x 0.13mm grey Thermal Phase Change Elastomer, bridging the gap between a thermal paste and solid filler pad a phase change elastomer-material. At room temperature it is a solid filler pad but when its transition temperature is reached it softens or melts and behaves more like a paste/grease. It does not dry out, separate or settle and has good compressibility.