HumiSeal® 1A33 is a single-component, urethane-based conformal coating designed for superior protection of printed circuit board (PCB) assemblies. It offers exceptional chemical resistance and moisture protection without free isocyanates, making it a top choice for durable and reliable coating solutions.
Key Features of HumiSeal® 1A33
- Urethane Chemistry: Provides robust, long-lasting protection.
- Chemically Resistant: Excellent performance in harsh environments.
- Single Component: Easy to apply without complicated mixing.
- Free of Isocyanates: Safe and compliant with environmental standards.
- Sharp Edge Coverage: Ensures complete protection on PCB edges.
- Compatible with Thinner 503/521: Allows for viscosity adjustment.
- Compliant with MIL-I-46058C: Meets military-grade quality standards.
- RoHS Directive 2015/863/EU Compliant: Environmentally friendly.
- UL Recognized: UL File Number E105698 certification.
- Moisture and Environmental Protection: Shields PCBs from moisture and harsh environmental conditions.
- Fluorescence Under UV Light: Enables easy inspection for quality control.
Application of HumiSeal® 1A33
HumiSeal® 1A33 can be applied to cleaned substrates or those assembled with low-residue “no clean” materials. Ensure compatibility by conducting adequate testing based on assembly materials, process conditions, and cleanliness levels. For more detailed guidance, contact a HumiSeal representative.
Achieve reliable PCB protection with HumiSeal® 1A33—a trusted solution for long-lasting, chemical-resistant coatings.
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.
| Density, per ASTM D1475 | 0.95 ± 0.02 g/cm³ |
| Solids Content, % by weight per Fed-Std-141, Meth. 4044 | 44 ± 2 % |
| Viscosity, per Fed-Std-141, Meth. 4287 | 180 ± 20 centipoise |
| Recommended Coating Thickness | 25 – 75 microns |
| Drying Time to Handle per Fed-Std-141, Meth. 4061 | 15 minutes |
| Optional Curing Conditions to Reach Optimum Properties | 30 days at RT |
| Thermal Shock, 50 cycles per MIL-I-46058C | -65°C to 125°C |
| Coefficient of Thermal Expansion – TMA | 193 ppm/°C |
| Glass Transition Temperature – DSC | 26°C |
| Flammability, per UL 94 | V-0 |
