HUMISEAL HumiSeal Acrylic Gel (1-LTR-BOTTLE)

HumiSeal® Acrylic Gel

Overview

HumiSeal® Acrylic Gel is a fast-drying, single-component, thixotropic acrylic paste designed to provide excellent moisture and environmental protection for printed circuit assemblies (PCAs). Developed for use alongside HumiSeal® acrylic conformal coatings, it provides additional protection through sealing, damming, and reinforcement around component leads. The material fluoresces under UV light for inspection purposes and allows easy repair when required. HumiSeal® Acrylic Gel is compliant with RoHS Directive 2002/95/EC.

Key Technical Specs

• Product Type: Single-component thixotropic acrylic protective gel
• Appearance: Acrylic paste
• Density: 0.95 ± 0.02 g/cm³ (ASTM D1475)
• VOC Content: 699 g/L
• Recommended Thickness: ?3 mm
• Tack-Free Time: 10 minutes @ 80°C
• Recommended Cure: 3 hours @ 80°C
• Optimum Properties Achieved: 7 days
• UV Inspection: Fluorescent under UV light

Typical Applications

• Protection of printed circuit assemblies
• Sealing electronic components
• Damming around components before conformal coating application
• Additional protection around component leads
• Moisture and environmental protection in electronic assemblies

Key Features & Benefits

• Fast drying single-component formulation
• Excellent moisture resistance and environmental protection
• Thixotropic properties allow controlled application without excessive flow
• Compatible with HumiSeal® acrylic conformal coating systems
• UV fluorescent identification simplifies inspection processes
• Easily repairable for maintenance operations
• RoHS compliant formulation

Application Guidelines

• Ensure substrate is completely clean, dry, and free from contamination
• Remove moisture, dirt, wax, grease, and organic or ionic residues before application
• Apply using automated needle dispensing equipment or manually where required
• Testing is recommended when applying over no-clean flux systems to confirm compatibility

Compatibility & Safety Notes

• Use only in well-ventilated areas
• Solvents are flammable - keep away from flames, sparks, and ignition sources
• Avoid skin and eye contact
• Follow local and national health and safety regulations
• Consult Safety Data Sheet (SDS) before use

Storage & Shelf Life

• Storage Temperature: 0-35°C
• Store in tightly closed containers away from excessive heat or cold
• Allow product to equilibrate for 24 hours at 18-32°C before use
• Shelf Life: 12 months at room temperature from date of manufacture

Packaging & Procurement

• Supplied as a dispensing-grade acrylic gel
• Recommended Strippers: HumiSeal® Stripper 1080 and 1080EU
• Suitable for automated dispensing applications

Why This Product is Chosen for Aerospace / Electronics MRO

• Provides reliable protection against moisture and environmental exposure
• Improves long-term reliability of electronic assemblies
• Supports inspection through UV traceability
• Allows controlled repair and maintenance processes
• Compatible with established aerospace conformal coating workflows

Practical Suggestions for Your Team (MRO Mindset)

• Maintain strict substrate cleanliness before application
• Verify compatibility with existing PCB materials and flux residues
• Control gel thickness to remain within recommended limits
• Allow full curing time before environmental exposure or service
• Use UV inspection methods to verify coverage and application quality

Manufacturer / Product Codes

• Product Name: HumiSeal® Acrylic Gel
• Product Code: 26061
• Product Type: Acrylic protective gel for electronic assemblies
• Application: PCB sealing, damming, and environmental protection