Arctic Alumina - Premium Thermal Adhesive

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  • Aluminum Oxide Thermal Adhesive
  • Pure Electrical Insulator
  • Permanent Adhesive

Product Details

Aluminum Oxide Adhesive Size: 5 Grams
RoHS Compliant Spread: 2 part system with a 1:1 Ratio
Pure Electrical Insulator Precaution: Permanent adhesive, will be difficult to remove


Arctic Alumina is a thermal adhesive to be used for thermal joints in minimum bond line applications. It is also useful in adhering Star Boards (MCPCBs) to heatsinks to aid in the thermal transfer away from your emitter. Arctic Alumina is a two part permanent adhesive which uses a layered composite of aluminum oxide and boron nitride. Mix the two tubes in a 1:1 ratio so it will work as an electrical insulator. Dries super fast and will last for the lifetime of your LEDs!

Arctic Alumina Thermal Adhesive

Two Part System

The Arctic Alumina Thermal Adhesive set consists of two syringes, Part A & B which contain 2.5 grams each for a total of 5 grams of adhesive. Included in the kit is a small plastic mixing wand for use throughout the process of connecting your LEDs to your heatsink.

  How to Use

  1. Clear both the surface of the heat sink and the back of the MCPCB of any old adhesives or obstructions on the surface. Clean and wipe down to remove any grease or dust particles.
  2. Arctic Alumina adhesive works with a 1:1 ratio, meaning equal amounts of Part A & B. It is important that you stick to this ratio as it will make for a better bond over time. Put an even amount of each on a mixing surface and use the wand to mix them. Be sure to only get the amount you need as this adhesive has a pot life of 3-4 minutes at room temperature and you don't want to waste any by letting it dry up unused!
  3. Use the mixing wand to spread a thin, even layer over the back of your MCPCB.Arctic Alumina Spread
  4. Press MCPCB firmly onto heat sink surface and clamp or apply weight to the bond so it becomes stronger. If using clamps, use wax paper in between the MCPCB surface so as not to ruin any connections or the light emitting diode.
  5. Wipe adhesive remnants away from the star board and keep clamp on for up to 60 minutes for best bond. After that, remove clamps and admire your work.

*for more thorough instructions along with product warnings please see the data sheet at the bottom of this page.

Adhesive should be kept cold and away from UV light. Best option is to keep refrigerated until you're ready to use. Wait until contents come back to room temperature before use!

Technical Specification

Suggested Use   Spread .004-.008" thick
Temperature Range  -40ºC > 150C 
Bond strength is weakened at temps below 0 C due to crystallization
Thermal Conductivity >4 W/m-K

Full Documentation


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