MG Chemicals 419D-P Clear Overcoat Pen for Electronics - Protect and insulate circuit board traces, 5mL

This conformal coating pen is designed to protect PCBs and sensitive electronic components from moisture, dust, and other contaminants. It air dries without UV-A light and comes in a green color that is a dead-on match for some solder masks. It covers exposed circuit board traces well, making the job much neater to look at. However, it might be obvious to an expert in PCBs. According to some users, the pen can be challenging to use as it requires a bit of force to squeeze it, and it is a bit pricey. On the other hand, others have reported that it goes a long way and works as described, although one user stated that it did not last long. Overall, this conformal coating pen might be a suitable solution for protecting PCBs or other delicate electronic components. However, it requires some expertise and care to apply correctly.