HUMISEAL HumiSeal 1R32A-2 (1-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 (PCAs) against moisture, dirt, and environmental contamination. The coating provides improved adhesion to common electronic substrates, low moisture vapour permeability, and excellent long-term environmental protection. Pre-blended versions are available with application-ready viscosities for spraying, dipping, and brushing processes.

Key Technical Specs

• Product Type: Single-component acrylic conformal coating
• Application: PCB and electronic assembly protection
• Appearance: Clear coating with UV fluorescent inspection capability
• Drying Time: Approx. 10 minutes to handle (ASTM D1640)
• Recommended Coating Thickness: 25-75 microns
• Recommended Cure: 24 hours at room temperature or 2 hours at 76°C
• Optimum Properties: Achieved after approximately 7 days
• VOC Content: 646-804 g/L depending on pre-blend formulation
• Shelf Life: 12-24 months depending on formulation

Approvals & Specifications

• Compliant with IPC-CC-830
• Compliant with REACH and RoHS Directive EU 2015/863
• Compliant with China Standard GB30981-2020
• Recognised under UL File Number E105698
• Contains no REACH SVHC substances requiring authorisation

Typical Applications

• Aircraft electronic assemblies and avionics protection
• Printed circuit board conformal coating
• Protection against moisture, dust, humidity, and environmental exposure
• Electronic assemblies requiring dielectric insulation and reliability enhancement
• Aerospace, industrial, automotive, and high-reliability electronics

Available Pre-Blend Options

• 1R32A-2 Standard: 220 cps viscosity, 29% solids
• 1R32A-2 PB65 / PB53: Pre-adjusted dipping and brushing grades
• 1R32A-2/505 Series: Available in PB90, PB65, PB40 formulations
• 1R32A-2/600 Series: Available in PB80, PB40, PB23 formulations
• 1R32A-2/673S Series: Available in PB150 and PB65 formulations
• 1R32A-2/73 PB40 formulation available for specific processes

Application Methods

• Spraying: Use suitable pre-blend grades with conventional spray equipment in well-ventilated areas.
• Dipping: Controlled immersion and withdrawal rates of approximately 5-15 cm/min recommended for uniform coating thickness.
• Brushing: Suitable pre-blend viscosities available for manual application.
• No additional thinning required for pre-blended products.

Compatibility & Safety Notes

• Ensure substrates are clean before coating application.
• Compatibility testing recommended with specific assembly materials and process conditions.
• Use only in well-ventilated areas to avoid solvent vapour exposure.
• Solvents are flammable-avoid sparks, flames, and ignition sources.
• Avoid skin and eye contact; consult SDS before use.

Storage & Packaging

• Store in tightly closed containers away from excessive heat and cold.
• Recommended storage temperature: 0-35°C.
• Allow product to stabilise for 24 hours at 18-32°C before use.
• Packaging available in multiple pre-blended coating formats.

Why This Product is Chosen for AOG / MRO

• Provides reliable protection for critical avionics and electronic assemblies
• UV fluorescent properties simplify inspection and quality control
• Fast drying characteristics support efficient maintenance workflows
• Excellent moisture resistance improves component reliability
• Repairable coating system simplifies maintenance activities

Practical Suggestions for Your Team (AOG Mindset)

• Select the correct pre-blend viscosity based on application method and equipment.
• Verify substrate cleanliness before coating to maximise adhesion.
• Maintain ventilation during spraying operations due to solvent content.
• Allow full cure time before returning electronic assemblies to service.
• Use approved HumiSeal thinners and strippers only for process control.

Manufacturer / Aviation Spec Codes

• Product Name: HumiSeal® 1R32A-2 Pre-Blended Products
• Product Type: Acrylic conformal coating
• Primary Function: Moisture and environmental protection for PCB assemblies
• Specifications: IPC-CC-830 / UL E105698 / RoHS / REACH compliant