Product Features
- Advanced Urethane Chemistry: Offers exceptional durability and robust protection.
- Chemical Resistance: Protects PCBs from harsh chemicals and environmental factors.
- Single-Component Formulation: Easy to use, requiring no mixing or additional preparation.
- Isocyanate-Free: Ensures safer handling and environmental compliance.
- Thinner 521 Compatibility: Enables efficient and flexible application processes.
- RoHS Directive 2015/863/EU Compliant: Adheres to the latest environmental safety regulations.
- UL Certification: Recognized under UL File Number E105698, ensuring product quality and reliability.
Why Choose HumiSeal® 1A27?
With its excellent moisture and environmental protection capabilities, HumiSeal® 1A27 is the perfect solution for general PCB applications. Its compliance with RoHS Directive 2002/95/EC and certification under UL standards make it a trusted product in the electronics industry.
Protect your circuit boards with HumiSeal® 1A27—the ultimate choice for durability, safety, and performance.
About Prostech
Prostech offers specialty materials (adhesives, tapes, thermal interface materials, insulating materials, sealants, PCB protection materials, …) along with manufacturing solutions. We proudly serve a wide range of industries and are an authorized distributor for leading global manufacturers of industrial materials and equipment. Our product range is designed to deliver customized solutions that address each customer’s unique needs.
With years of experience and a successful project history, we are confident in our ability to provide comprehensive material solutions. These solutions effectively tackle the challenges manufacturers face. To explore our full product catalog, simply click here. Our dedicated team is ready to assist with:
- Provide quotation, sample, TDS/MSDS, and technical consultation
- Testing sample quality and verifying product compatibility in our laboratory
- Customizing material formulas for special applications
- Adapting product sizes, quantities, and packaging to meet specific needs
- Offering expert advice on suitable equipment and automation processes
- Delivering technical training and on-site support for optimal product use
Moreover, Prostech ensures the safe and accurate global delivery of all materials, including “dangerous goods”, in compliance with legal regulations. For personalized technical support or to receive a quotation, please contact us today.
| Property | Value |
| Density (ASTM D1475) | 0.96 ± 0.02 g/cm³ |
| Solids Content (% by weight, Fed-Std-141, Meth. 4044) | 50 ± 3 % |
| Viscosity (Fed-Std-141, Meth. 4287) | 3000 ± 1000 centipoise |
| VOC | 480 grams/litre |
| Recommended Coating Thickness | 25 – 75 microns |
| Drying Time to Handle (Fed-Std-141, Meth. 4061) | 30 minutes |
| Optional Curing Conditions to Reach Optimum Properties | 30 days at RT, 30 hours @ 76°C, 20 hours @ 88°C |
| Recommended Thinner | HumiSeal® Thinner 521 |
| Recommended Stripper | HumiSeal® Stripper 1063 |
| Shelf Life at Room Temperature (from DOM) | 24 months |
| Thermal Shock (50 cycles, MIL-I-46058C) | -65°C to 125°C |
| Coefficient of Thermal Expansion (TMA) | 170 ppm/°C |
| Glass Transition Temperature (DSC) | 28°C |
| Modulus (DMA) | 18.1 MPa |
| Flammability (UL 94) | V-0 |
| Dielectric Withstand Voltage (MIL-I-46058C) | >1500 volts |
| Dielectric Breakdown Voltage (ASTM D149) | 7500 volts |
| Dielectric Constant (1MHz, 25°C, ASTM D150-98) | 3.6 |
| Dissipation Factor (1MHz, 25°C, ASTM D150-98) | 0.02 |
| Insulation Resistance (MIL-I-46058C) | 2.0 × 10¹⁴ ohms (200TΩ) |
| Moisture Insulation Resistance (MIL-I-46058C) | 1.2 × 10¹⁰ ohms (12GΩ) |
