Check the listing for details. Prolimatech PK-3 Thermal Compound 1.5g. Condition: New. Listed at 12.99 USD. A heatsink and the processor want to make full contact, but microscopic imperfections in their craftsmanship create small gaps for air. These gaps act as thermal insulators, inhibiting the transfer of thermal energy from your components. PK-3 thermal compound is made up of specially designed nano particles, engineered to correct these imperfections. The nano particles work by filling in the small air gaps and allowing for peak transfer of heat away from your components.Specific Gravity 2.7g/cm³ Adhesiveness 330000 Cps Thermal Conductivity 11.2 W/m-℃ Thermal Impedance 0.013 ℃-in²/W Dielectric Constant 5 KV/mmHigh Thermal ConductivityLow Thermal ResistanceLong-Term StabilityLow Dry-OutNon-CorrosiveElectrically Non-ConductiveNo "burn-in" time required