Exposed copper traces, scratched solder mask, and repaired jumper wires leave a PCB board vulnerable to shorts, oxidation, and moisture. HMT-L081 solder mask ink (green oil) seals those exposed areas with a tough, insulating coating that sets in about three seconds, so you can move straight from repair to testing without waiting around. The result is a clean, factory-looking finish that protects the board for the long haul.
Two Colors for Two Jobs
Semi-transparent – lets you see traces, pads, and joints beneath the coating, ideal for inspection points and areas you may need to rework later
Green – classic PCB green that blends seamlessly with factory solder mask, so repairs are practically invisible
Why You'll Reach for It on Every Board
Fast-drying formula – sets in about three seconds, keeping your repair workflow moving without long cure times
Reliable insulation – forms a protective barrier over exposed traces and solder joints to prevent shorts and leakage
Guards against oxidation and moisture – sealed copper stays clean and corrosion-free, extending board life
Strong adhesion – bonds firmly to FR4 fiberglass, existing solder mask, and repaired areas without peeling
Precise application – dispense a small drop exactly where you need it, perfect for covering jumper wires, BGA pads, and scratched traces
How to Use
Clean the repair area to remove flux residue, dust, and oil.
Apply a small drop of HMT-L081 over the exposed trace, joint, or repaired wire.
Let it set – the coating cures quickly at room temperature.
Add a second thin coat if extra thickness or coverage is needed.
Applications: covering exposed traces and solder joints, protecting repaired jumper wires, insulating BGA pads, and cosmetic PCB touch-ups
Who It's For
A bench essential for phone and laptop motherboard repair technicians, PCB rework shops, and electronics hobbyists. Keep both colors in stock: green for invisible repairs, semi-transparent for work that needs to stay visible and inspectable.
Tip: apply in thin layers – a thin coat of solder mask protects just as well and finishes far neater than one heavy drop.
