Humiseal 1B31 HumiSeal Acrylic Conformal Coating 1 Gallon

127-467 MFG #: 1B31
$291.33 /
  • Color: Clear
  • Container Volume: 1
  • Flammable: Yes
  • Material: Acrylic
  • Temperature Range: -65 to 125
  • Container Volume UOM: gal.
  • Drill Down Description: HumiSeal Acrylic Conformal Coating, 1 Gallon
  • Model: 1B31
  • Primary Keyword: Acrylic Conformal Coating
  • Temperature Range UOM: °C

Fast Drying

  • Description
  • MIL-I-46058C qualified, IPC-CC-830 and RoHS Directive 2002/95/EC compliant

HumiSeal 1B31™ is a fast drying, single component, acrylic conformal coating that provides excellent moisture and environmental protection for printed circuit assemblies. HumiSeal 1B31™ demonstrates excellent flexibility, fluoresces under UV light for ease of inspection and is easily repaired.

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, flux residues and all other contaminants. Contamination under the coating could cause problems that may lead to assembly failures.

Dipping Depending on the complexity, density and configuration of components on the assembly, it may be necessary to reduce the viscosity of HumiSeal 1B31™ with HumiSeal Thinner 503 in order to obtain a uniform film. Once optimum viscosity is determined, a controlled rate of immersion and withdrawal (5-15 cm/min) will further ensure even deposition of the coating and ultimately a uniform film. During the application, evaporation of solvent causes an increase in viscosity that should be adjusted by adding small amounts of HumiSeal Thinner 503. Viscosity in the dip tank should be checked regularly using a simple measuring device such as a Zahn or Ford viscosity cup.

Spraying HumiSeal 1B31™ can be sprayed using conventional spraying equipment. Spraying should be done in an environment with adequate ventilation so that the vapour and mist are carried away from the operator. The addition of HumiSeal Thinner 521 is necessary to ensure a uniform spray pattern resulting in pinhole-free film. The amount of thinner and spray pressure will depend on the specific type of spray equipment used and operator technique. The recommended ratio of HumiSeal 1B31™ to HumiSeal Thinner 521 is 1:1 by volume, however the ratio may need to be adjusted to obtain a uniform coating.

Brushing HumiSeal 1B31™ may be brushed with a small addition of HumiSeal Thinner 503. Uniformity of the film depends on component density and operator's technique.