MG Chemicals 419D-55ML Premium Acrylic Conformal Coating, Clear

This conformal coating performs exactly as described.. It's a reasonably thick, varnish like fluid that is easily applied using the supplied brushes (2 of them in the pack). The brushes are thin enough to fit into those awkward places, with the bristles being just the right size to hold enough, but not too much fluid. They were easily cleaned after use with White Spirit, so can be reused. The fluid forms an even coat that dries quickly yet performs well in protecting electronic circuit boards. At 55ml the bottle may look small, but it goes a long way. I coated both side of my cars control unit/fuse box without making a noticeable drop in the level in the bottle.

But I'm sold. It's very good and so far, it's holding up. Plenty enough to last.

Works as intended great product, did not take too long to be delivered. I have been using on my RC projects including my drone and it has stood a few light tests such as flying in foggy conditions.

And at least you know the ingredients won't damage your PCB. Bought this for protecting circuits when delidding a CPU and applying liquid metal thermal compound. Also used for water protecting circuits of cheap LED floodlights.

Used to seal a PCB exposed to humidity, easy to apply and flows well! Goes off very fast so expect to buy more if you don't use it regularly and need it in future.

Excellent product, easy to apply with a suitable small brush (you have to provide your own☹️) It helps if you have acetone or MEK to clean your brush out afterwards, too - not the easiest of solvents to use, but the most effective.

This is a staple piece on my freestyle build, it’s held up. I had a drone stuck in a quarry in rainy England. When I got the drone back and plugged it in the electronics turned on. Thanks to this

No specific instructions