HUMISEAL HumiSeal 1R32A-2 (5-LTR-CAN)

HumiSeal® 1R32A-2 Pre-Blended Products

Overview

HumiSeal® 1R32A-2 is a fast-drying, single-component acrylic conformal coating designed to protect printed circuit assemblies from moisture, dirt, and environmental exposure. The coating provides improved adhesion to common substrates, low moisture vapour permeability, and excellent electrical insulation performance. A range of pre-blended versions are available, optimized for different application methods including dipping, spraying, and brushing without additional dilution.

Key Technical Specs

• Product Type: Single-component acrylic conformal coating
• Appearance: Clear acrylic coating with UV fluorescent inspection capability
• Recommended Coating Thickness: 25-75 microns
• Drying Time to Handle: Approx. 10 minutes (ASTM D1640)
• Recommended Cure: 24 hours at room temperature or 2 hours at 76°C
• Optimum Properties Achieved: Approx. 7 days after cure
• VOC Content: 646.1 g/L (standard 1R32A-2)
• Density: Approx. 0.91 g/cm³
• Shelf Life: Up to 24 months depending on product variant

Approvals & Specifications

• Compliant with REACH and RoHS Directive EU 2015/863
• Compliant with IPC-CC-830
• Compliant with China Standard GB30981-2020
• Recognized under UL File Number E105698
• Contains no substances listed on the REACH SVHC candidate list
• UL 94 V-0 flammability rating
• MIL-I-46058C thermal shock and dielectric testing compliance

Typical Applications

• Protection of printed circuit assemblies (PCAs)
• Aerospace and electronic equipment protection
• Electrical and electronic assemblies exposed to moisture or contamination
• Applications requiring corrosion protection and environmental sealing
• High-reliability electronic systems requiring conformal coating protection

Performance Properties

• Excellent moisture and environmental protection
• Low moisture vapour permeability
• Improved adhesion to common electronic substrates
• Fluoresces under UV light for inspection and quality control
• Easy repair and removal using approved HumiSeal strippers
• Good resistance to thermal cycling and environmental exposure
• High dielectric strength and insulation resistance

Application & Processing

• Suitable for dipping, spraying, and brushing applications
• Surfaces should be cleaned before coating application
• Pre-blended products are supplied ready for immediate use without additional dilution
• Application equipment and coating viscosity should be selected according to the chosen pre-blend grade
• Spray applications require adequate ventilation to remove vapours and coating mist

Recommended Thinners

• Dipping & Brushing:
  • HumiSeal® Thinner 503
  • HumiSeal® Thinner 505
  • HumiSeal® Thinner 73
• Spraying:
  • HumiSeal® Thinner 521
  • HumiSeal® Thinner 521EU
  • HumiSeal® Thinner 600

Available Pre-Blend Variants

• 1R32A-2
• 1R32A-2 PB65
• 1R32A-2 PB53
• 1R32A-2/505 PB90
• 1R32A-2/505 PB65
• 1R32A-2/505 PB40
• 1R32A-2/600 PB80
• 1R32A-2/600 PB40
• 1R32A-2/600 PB23
• 1R32A-2/673S PB150
• 1R32A-2/673S PB65
• 1R32A-2/73 PB40

Storage & Safety Notes

• Store in tightly closed containers away from excessive heat or cold
• Recommended storage temperature: 0-35°C
• Allow product to equilibrate for 24 hours at 18-32°C before use
• Contains flammable solvents-avoid open flames and ignition sources
• Use only in well-ventilated areas
• Avoid contact with skin and eyes
• Refer to Safety Data Sheet (SDS) before use

Packaging & Procurement

• Available in multiple pre-blended grades for specific application requirements
• Supplied ready for use depending on selected viscosity grade
• Storage life:
  • Up to 24 months for standard 1R32A-2 products
  • Up to 12 months for certain pre-blend variants

Why This Product is Chosen for AOG / MRO

• Provides reliable protection for sensitive electronic assemblies
• Fast drying reduces turnaround time during maintenance activities
• UV traceability improves inspection efficiency and quality control
• Excellent electrical insulation properties for aerospace electronics
• Repairable coating system supports maintainability requirements

Practical Suggestions for Your Team (AOG Mindset)

• Select the correct pre-blend viscosity based on application equipment and required coating thickness
• Ensure assemblies are fully cleaned and dry before coating
• Monitor application thickness to maintain required protection levels
• Allow full curing time before electrical testing or return to service
• Use approved HumiSeal thinners and strippers to maintain compatibility

Manufacturer / Aviation Spec Codes

• Product Name: HumiSeal® 1R32A-2 Pre-Blended Products
• Product Type: Acrylic conformal coating
• Application: Printed circuit assembly protection
• Specifications: IPC-CC-830 / UL E105698 / MIL-I-46058C testing
• Manufacturer: HumiSeal® (Chase Corporation)