Thermal Grease

Thermal grease is known by a number of names including:
• CPU grease
• heat paste
• heat sink compound or paste
• thermal compound, gel or paste
• thermal interface material.
It is a thermally conductive material which is usually electrically insulating which helps to dissipate heat from a device. Its main function is to ensure there is no air space between which would act as a thermal insulator. It fills in the microscopic imperfections on the heatsink and device.
It is most commonly used between a CPU and a heat sink to maximise heat transfer. It is also used on other electronic components which create heat and also need a heat sink such as MOSFET transistors.
There are other types of products to eliminate the air gap under a heat sink:
• Thermal Adhesive
• Thermal Gap Pads

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Description Price Thermal Conductivity Material Maximum Operating Temperature Minimum Operating Temperature Pack Size Chemical Component Operating Temperature Range Physical State
RS Stock No. 707-4736
BrandRS PRO
SGD29.85
Each
units
5W/m·K Silicone +180°C -40°C 30g - -40 → +180 °C -
RS Stock No. 909-2092
BrandRS PRO
SGD151.61
Each
units
3.4W/m·K - +125°C -30°C - - -30 → +125 °C -
RS Stock No. 915-6118
BrandRS PRO
SGD33.79
Each
units
4W/m·K Non-Silicone +150°C -50°C - - -50 → +153 °C -
RS Stock No. 707-4733
BrandRS PRO
SGD19.94
Each
units
1.8W/m·K Silicone +180°C -40°C 30g - -40 → +180 °C -
RS Stock No. 915-6105
BrandRS PRO
SGD26.19
Each
units
2W/m·K Non-Silicone +150°C -50°C - - -50 → +150 °C -
RS Stock No. 707-4724
BrandRS PRO
SGD31.44
Each
units
3.6W/m·K Silicone +180°C -40°C 30g - -40 → +180 °C -
RS Stock No. 915-6111
BrandRS PRO
SGD307.85
Each
units
4W/m·K Non-Silicone +150°C -50°C - - -50 → +152 °C -
RS Stock No. 915-6109
BrandRS PRO
SGD169.13
Each
units
2W/m·K Non-Silicone +150°C -50°C - - -50 → +151 °C -
RS Stock No. 554-311
BrandRS PRO
SGD30.41
Each
units
0.65W/m·K Metal Oxide +200°C -40°C 20mL Powdered Metal Oxides, Silicone Oil -40 → +200 °C -
RS Stock No. 665-4846
Mfr. Part No.CW7270
SGD19.14
Each
units
0.71W/m·K Non-Silicone +200°C -15°C 8g - -15 → +200 °C -
RS Stock No. 127-035
Mfr. Part No.TIC1000A-00-00-5.0CC
BrandBergquist
SGD114.44
Each
units
1.5W/m·K Non-Silicone +150°C - 0.5mL - Maximum of +150 °C -
RS Stock No. 277-8200
Mfr. Part No.CT40-5
SGD36.29
Each
units
0.63W/m·K Silicone +200°C -73°C 142g - -73 → +200 °C -
RS Stock No. 665-4855
Mfr. Part No.CW7250
SGD21.09
Each
units
1.85W/m·K Boron Nitride +200°C -73°C 8g - -73 → +200 °C -
RS Stock No. 362-9698
Mfr. Part No.GF2000-00-15-50CC
BrandBergquist
SGD235.69
Each
units
2W/m·K Gap Filler 2000 +200°C -60°C 50mL - -60 → +200 °C -
RS Stock No. 124-7692
Mfr. Part No.8617-85ml
SGD66.29
Each
units
1W/m·K - +165°C -68°C 85mL - -68 → +165 °C -
RS Stock No. 181-1273
Mfr. Part No.GP300
SGD21.70
Each
units
- Silicone +160°C -50°C - - -50 → +160 °C -
RS Stock No. 131-6331
Mfr. Part No.32716
BrandCRC
SGD43.05
Each
units
- - - - 100g - - -
RS Stock No. 774-2697
Mfr. Part No.WLPK 05
SGD61.27
Each
units
10W/m·K Ceramic Synthetic Fluid +150°C -60°C 5mL - -60 → +150 °C -
RS Stock No. 182-6359
Mfr. Part No.HTSX35SL
SGD36.28
Each
units
1.58W/m·K - +200°C -50°C 35mL Powdered Metal Oxides, Silicone Oil -50 → +200 °C Paste
RS Stock No. 181-1274
Mfr. Part No.GP300SL
SGD42.98
Each
units
- Silicone +160°C -50°C - - -50 → +160 °C -