Acrylics Conformal coating 1B18
Model No: 1B18

HumiSeal® 1B18 is a single component, fast drying, acrylic conformal coating intended for use on printed circuit assemblies. HumiSeal® 1B18 demonstrates excellent flexibility and electrical properties, fluorescence under UV light for ease of inspection and is easily repaired. It can be applied by spraying, brushing, or dipping methods.

 Product Enquiry

Humiseal 1B18 Acrylics Conformal Coating  Features

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


Applications of HumiSeal® 1B18 Acrylics Conformal Coating

Conformal coatings can be successfully applied to substrates that have been cleaned prior to coating and also to substrates assembled with low residue “no clean” materials. Users should perform adequate testing to confirm compatibility between the conformal coating and their particular assembly materials, process conditions and cleanliness level. 


Product Specification

Density, per ASTM D1475

0.92 ± 0.02 g/cm³

Solids Content, % by weight per Fed-Std-141, Meth. 4044

30 ± 2 %

Viscosity, per Fed-Std-141, Meth. 4287

250 ± 20 centipoise


654 grams/litre

Drying Time to Handle per Fed-Std-141, Meth. 4061

30 minutes

Recommended Coating Thickness

25 – 75 microns

Recommended Curing Conditions

24 hrs @ RT or 2 hrs @ 76°C

Time Required to Reach Optimum Properties

7 days

Recommended Thinner

HumiSeal Thinner 73

Recommended Stripper

HumiSeal Stripper 1080

Shelf Life at Room Temperature, DOM

24 months

Thermal Shock, 50 cycles per MIL-I-46058C

-65°C to 125°C

Coefficient of Thermal Expansion – TMA

67 ppm/°C

Glass Transition Temperature – DSC


Modulus – DMA

 11.1 MPa

Flammability, per UL 94


Dielectric Withstand Voltage, per MIL-I-46058C

>1500 volts

Dielectric Breakdown Voltage, per ASTM D149

6300 volts

Dielectric Constant, at 1MHz and 25°C, per ASTM D150-98


Dissipation Factor, at 1MHz and 25°C, per ASTM D150-98


Insulation Resistance,  per MIL-I-46058C

5.5 x 1014 ohms (550TΩ)

Moisture Insulation Resistance, per MIL-I-46058C

7.0 x 109 ohms (70GΩ)

Fungus Resistance, per ASTM G21



Key Tag :

Acrylic Conformal Coating Spray | Acrylics Conformal Coating 1B18 | Distributor | Supplier | Dealer | Wholesaler | East Delhi | Noida | Delhi | India