Sil-Pad 2000 Insulating Material, White Colour, 0.015in Thick, 3.5W/m-K Thermal Conductivity, -60°C to +200°C, 4000Vac Breakdown Voltage, Silicone/Fiberglass Material, 1000PSI Tensile Strength, 2.02°C/W Thermal Resistance, TO-220, 10 Package Quantity, 19.05mm Long, 12.7mm Wide, Thermal Transfer Material which Offers Vastly Improved Performance Over Normal Thermal Transfer Materials, Suitable for Applications Demanding Extremely Efficient Heat Transfer such as Military, Medical or Aerospace, or for High Reliability Electronics where Junction Devices of Integrated Circuits are Critical, Supplied in Pack of 10