HumiSeal 1A27LTX Urethane Conformal Coating
Harmonization Code : 3906909090 | Acrylic polymers in primary form Others>Others
Main features
- Single-component polyurethane conformal coating
- UL 94 V-0 Flame Retardant
- No free isocyanates
Product Description
HumiSeal 1A27 LTX is a high-performance, single-component polyurethane conformal coating designed for advanced PCB protection. Engineered with a low-VOC formulation, it meets stringent environmental regulations—including China’s GB30981-2020—without compromising on performance.
Product Key Features
- Single-component polyurethane conformal coating
- Protection against moisture, corrosive environments, and contamination
- Low moisture vapor permeability for long-term reliability
- Easy application using automated or manual methods
- Reduced xylene and toluene formulation
- No free isocyanates
- Compliant with GB30981-2020 VOC regulations
- UL 94 V-0 flame retardant
Applications
- General printed circuit board (PCB) protection
- Consumer, industrial, and automotive electronics
- Assemblies exposed to moisture, dust, or corrosive environments
- Electronics requiring long-term insulation resistance and dielectric strength
HUMISEAL 1A27LTX
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General Properties
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Additional Information
Learn More About HumiSeal® 1A27 LTX
Application Methods
HumiSeal® 1A27 LTX is designed for flexible application across automated and manual coating processes.
Application Methods:
- Dipping: Viscosity may be adjusted using HumiSeal® Thinner 789 to ensure uniform film thickness. Controlled immersion and withdrawal rates of 5–15 cm/min are recommended. Viscosity should be monitored regularly using Zahn or Ford cups.
- Spraying: Suitable for conventional spray equipment. Thinning with HumiSeal® Thinner 789 is required to achieve a uniform, pinhole-free coating. Adequate ventilation must be provided.
- Brushing: Can be applied by brush with minor thinning. Final film quality depends on component density and operator technique.
Important Notes:
- Substrates must be clean, dry, and free of flux, grease, and contaminants.
- Contamination beneath the coating can lead to electrical or mechanical failure.
- Allow sufficient curing time to reach optimum performance.
Application Compatibility
HumiSeal® 1A27 LTX is compatible with a wide range of PCB materials and electronic components.
Compatible With:
✔ Printed circuit boards and electronic assemblies
✔ Automated dip, spray, and selective coating systems
✔ Standard electronics manufacturing materials
Additional Guidance:
For optimal performance, ensure proper cleaning prior to coating. Consult Technical Support for guidance on viscosity adjustment, equipment selection, or pre-blend solutions.
Safety and Handling Precautions ⚠️
- Use only in well-ventilated areas.
- Avoid inhalation of vapors or spray mist.
- Avoid contact with skin and eyes.
- Keep away from sparks, hot surfaces, and open flames.
- Follow all local and national health and safety regulations.
Always consult the Safety Data Sheet (SDS) before use.
Storage Recommendations 📦
Store HumiSeal® 1A27 LTX in tightly closed containers, away from excessive heat or cold. Recommended storage temperature is 0–35°C. Prior to use, allow the material to equilibrate for 24 hours at room temperature (18–32°C).
Compliance You Can Trust ✅
HumiSeal® 1A27 LTX meets stringent regulatory and performance standards for conformal coatings:
✔ GB30981-2020 compliant
✔ UL 94 V-0 flammability rated
✔ High dielectric strength and insulation resistance
✔ Designed for long-term electronic protection
