MG Chemicals - 422B-340G 422B Silicone Conformal Coating, Clear, 340 gram Aerosol

I used this product on a 24 year old PCB board for a gate controller. After cleaning the PCB board of old no longer conformal acrylic coating, I sprayed four moderately thick coats from all four directions. After drying over night, the PCB board looked more or less new. Back in the powder coated steel case, rewired, and good-to-go! Great product. Thank-you!

I coated a PCB with this that will be used in a marine environment. This should keep it from corroding, ideally for at least a couple years but we’ll see. Salt is pretty corrosive.This was easy to use and you can see which areas you are coating so you can find any areas that aren’t coated and give it a quick spray.

I'm using this product to seal and protect various PCB that will be outdoors 365 days a year. It's a great product, get the silicone coating, it's less prone to cracking and separation.

easy to apply and works as advertised

takes way to many coats .....

There is so much out there for yard illumination. However most all of these have bare circuit boards. This convenient conformal coating sprays on and a couple coats later you have a very nice layer that seals out the elements and protects your electronics.

Dries fast and flat, even if you put to much on in one area. Wise it was a little thicker as its hard to tell if it is truly coating everything.

It works fine. It looks white when fresh but dries clear.