M78H-41 is a one-component curing formula composed of modified polyurethane, waterproofing additives, and additives. The protective film formed by M78H-41 is transparent, glossy, and has strong adhesion and high insulation resistance. It is suitable for both high- and low-voltage equipment. M78H-41 is resistant to acids, alkalis, and various impure water. It dries quickly and can be dried at room temperature, making it very easy to use.

It is primarily used for waterproofing and moisture-proofing PCBs, electronic components, and metal surfaces. The surface sealed with this agent is highly hydrophobic, preventing water from forming even in humid environments and with large temperature fluctuations.