HumiSeal® UV40 is a high-performance, single-component, UV-curable acrylated polyurethane conformal coating. With high solids content, it provides excellent protection for printed circuit boards (PCBs) through superior chemical resistance, surface hardness, flexibility, and moisture resistance.
Key Features of HumiSeal® UV40
- UV Curable: Tack-free immediately after UV light exposure.
- Secondary Cure: Unexposed areas cure through moisture in 2-3 days under ambient conditions.
- High Chemical Resistance: Provides strong protection against corrosive environments.
- Surface Hardness & Flexibility: Offers durability while maintaining flexibility.
- Moisture Resistance: Shields PCBs from moisture damage.
- Fluoresces Under UV Light: Facilitates inspection for quality control.
- HumiSeal® UV40 is recognized under UL File Number E105698 and meets stringent standards such as MIL-I-46058C, IPC-CC-830, and RoHS Directive 2011/65/EC compliance.
Application of HumiSeal® UV40
HumiSeal® UV40 can be applied to substrates that have been cleaned prior to coating or those assembled with low-residue “no clean” materials. It is recommended to perform compatibility testing to ensure optimal results with your assembly materials, cleanliness level, and process conditions. For more information, contact HumiSeal® for expert assistance.
Maximize your PCB protection with HumiSeal® UV40—the ideal conformal coating for advanced chemical and moisture defense.
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.
Typical Properties
| Density | 1.10 ± 0.05 g/cm3 |
| Minimum Solids Content | 95 % |
| Viscosity, per Fed-Std-141, Meth. 4287 | 650 ± 150 centipoise |
| Recommended Coating Thickness | 25 – 125 microns |
| Recommended UV Cure* | See curing section below |
| Thermal Shock, 50 cycles per MIL-I-46058C | -65°C to 125°C |
| Glass Transition Temperature – DSC | 45°C |
| Dielectric Withstand Voltage, per MIL-I-46058C | >1500 volts |
| Insulation Resistance, per MIL-I-46058C | 8.0 x 1014 ohms (800TΩ) |
| Resistance to Chemicals | Excellent |
