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Quick Details

  • Place of Origin: United States
  • Main Raw Material: Acrylic
  • Usage: Other
  • Brand Name: HumiSeal
  • Model Number: 1B31
  • Main Constituent: Acrylic
  • VOC ( grams / liter ): 592
  • Shelf Life at Room Temperature: 12 months
  • Weather Resistance: Very Good

Packaging & Delivery

Packaging Details 1 can/carton
Delivery Time 3-15days

 Acrylic Conformal Coating HumiSeal 1B31 for  printed circuit assemblies



Product Description


A fast air drying, single component, acrylic coating providing excellent moisture and environmental protection for
printed circuit assemblies. The final film demonstrates excellent flexibility and is easily repairable. This coating
is qualified to MIL-I-46058C, AR. Fluoresces under UV light for ease of inspection.



Properties of Liquid HumiSeal

Density, (g/cm3) per ASTM, Meth. D1475

 0.90 ± 0.02  
Solids Content, % by weight per Fed-Std-141, Meth.4044  35 ± 3
Viscosity, centipoise per Fed-Std--141, Meth. 4287  197 ± 13

Flashpoint, 0C (0F) per ASTM, Meth. D56

VOC ( grams / liter ) 592  
Drying Time to Handle per Fed-Std-141, Meth.4061  10 minutes  
Recommended Coating Thickness 1 - 3 mils 
Recommended Curing Conditions  24 hrs @ rm. temp or 30 min.@ 76°C  
Time Required to Reach Optimum Properties  7 days  
Thinner, if needed (dipping & brushing)  Thinner 503  
  (spraying) Thinner 521  
Recommended Stripper  Stripper 1080  
Shelf Life at Room Temperature12 months  





HumiSeal coatings may be applied by brush, dip or spray. 

Cleanliness of the substrate is of extreme importance for the successful application of a conformal 

coating. Surfaces must be free of moisture, dirt, wax, grease and all other contaminants. Contamination under
the coating will cause problems, which may lead to assembly failures.


HumiSeal 1B31™ should be stored at room temperature, away from excessive heat, in tightly closed containers.
HumiSeal products may be stored at temperatures of 18-38°C. Avoid direct sunlight. Prior to use, allow the
product to equilibrate for 24 hours at 18-32°C.

The solvents in HumiSeal 1B31™ are flammable. Do not use in presence of open flame or sparks. Avoid
inhalation of vapours or spray. Use only in well-ventilated areas. Avoid contact with skin and eyes. If contact
occurs, wash with soap and water. If swallowed, cal physician immediately. Refer to MSDS before use.


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