Humiseal 1A33 Polyurethane - 365ML Aerosol

The product is conveniently dispensed from aerosol cans, utilizing an environmentally safe, non- ODP propellant and contains UV tracer for inspection under black light. The coating may be removed chemically using HumiSeal Stripper 1063. HumiSeal 1A33 Aerosol is IPC-CC-830 and RoHS Directive 2002/95/EC compliant and recognized under UL File Number E105698.

HumiSeal 1A33 conformal coating is:

• Urethane chemistry
• chemically resistant
• single component
• contains no free isocyanates
• used in combination with Thinner 503/521
• MIL-I-46058C qualified
• RoHS directive 2015/863/EU
• Recognized under UL File Number E105698

HumiSeal 1A33 conformal coating has:

• excellent moisture and environmental protection for printed circuit assemblies
• fluorescence under UV light for ease of inspection

Application of HumiSeal 1A33 Aerosol

1. Allow 48 hours minimum to reach room temperature before using cans stored or received during cold weather.
2. When applied in conditions of high ambient humidity, blushing (cloudy white film) may appear.  Heating the coated assembly in an oven for 1/2 hour at 76°C eliminates this condition.
3. Surface must be cleaned of dirt, wax, grease, flux residues and all similar contaminants for successful application of the coating.
4. Mask areas not requiring coating from overspray using suitable non-silicone masking methods or materials.
5. Shake can vigorously before using and repeat frequently during use.
6. Best results are obtained by spraying from a distance of 30 – 40 cm in light even coats.  A film thickness of 25 – 75 microns is sufficient to provide protection.
7. To clean nozzle after use, hold can upside down, then press nozzle for a few seconds.