MG Chemicals 832TC-450ML Thermally Conductive Epoxy Encapsulating and Potting Compound, 15 oz Kit, Black

For those who don't know what this is, this is a potting compound, In electronics, potting is a process of filling a complete electronic assembly with a solid or gelatinous compound for resistance to shock and vibration, and for exclusion of moisture and corrosive agents. Many people use this for various applications, but the most common is using it to seal OEM or aftermarket HID ballasts. This will make the ballast weatherproof and very resistant to shocks and vibrations that your car produces while driving. This kit includes enough epoxy to do 4 HID ballasts. Just follow the directions on the packaging. I needed to rush mine so I placed it in the oven at 125 degrees for 2 hours and I it was solid as a rock. I am very happy with the results. MG is the only brand I recommend, and Amazon has the best pricing for this set.

Great product cures fairly quickly at room temperature. Epoxy wouldn't run after 5 hours. Just make sure to mix resin and hardener by volume and not by weight as their density is not the same, so no measuring scale for this one. Also mix part A and part B by itself before introducing them to each other, just make sure to use separate tools for each part (the .45 gallon kit comes in tin cans)

Mixed it per instructions. 7 days later and it's still tacky.

Works as described; but if you are looking for some "5 minute" epoxy; keep looking. This stuff takes 4 days to cure at room temperature. or 2hours at 65C. It works for most of my uses; as I have a temperature controlled heat skillet that I use for solder reflow. Just keep in mind this stuff as a VERY LONG pot life.

This is what was recommended to pot Denso slim HID ballasts to ensure they don't get affected by the weather/moisture. I had never done it before but watched a few videos and saw the review on here as well so I'm posting my pictures to add in the bunch. Very easy to do, make sure you're wearing gloves and mix small batches, that way you don't accidentally run out of time or it becomes too hard. I did one ballast per batch that I made. Slowly poured into the ballast and make sure there's no air bubbles and then you wait several days unless you put it in the oven to cure. I'm doing a projector retrofit on my CT 200h so I have no rush at all and let these cured for at least a week or so. You can see the finished product is a completely waterproof ballast. This does add a little bit of weight to the ballast I was actually sort of surprised at how much heavier the ballast weighed after potting them. This probably completely voids any manufacturer's warranty and of course if something goes wrong you're not going to be able to get into the ballast after this. But if you're potting them you probably already know that and it doesn't matter.

I've been using this for a while, but the latest shipment came in 1qt paint cans, not screw top bottles. How am I supposed to pour 100 grams of epoxy from a 1qt paint can and reseal it without making a complete mess. What were they thinking.

There are a lot better, more thermally conductive, faster curing, better fixed, and less smelly options on the market. Does it work? Yes. Is it worth the price? Barely. Willing to spend a bit more and get 2x or more performance with less fuss? Look at Kona 870 in dispenser tubes, or nearly anything else in mix pots, like Duralco 4525.

Used this to pot some Denso HID ballasts. Used about 30ml of each part, so 60ml total, for each ballast. I followed the directions pretty closely. Started off by pouring each part into their clear measuring cups. Then poured them into paper coffee cups to mix and let settle for 30 mins. This allows air bubbles to escape to the top. Then I slowly and carefully poured the epoxy into the ballasts and kept going back to areas to pop the bubbles and add more as needed as it sat. Process took about 30+ mins per ballast because I was watching and waiting for bubbles to appear. Curing time is a bit crazy at room temperature, 96 hours. Luckily I am in no rush and they have 48 hours left at the time of this review. They are pretty rock solid as is now though, a few tiny softer spots if anything. I wish the price was cheaper but you do get what you pay for. I know these Denso ballasts should last a very long time, especially with this epoxy. I have plenty to do more, so I may venture out and do that, then resell those. I highly recommend this stuff!