Product Introduction: HumiSeal® 1B18
HumiSeal® 1B18 is a single-component, fast-drying acrylic conformal coating designed for printed circuit assemblies. Offering excellent flexibility, superior electrical properties, and protection against moisture and environmental factors, it fluoresces under UV light for easy inspection and is easily repairable. This coating is UL File Number E105698 recognized and compliant with RoHS Directive 2015/863/EU.
HumiSeal® 1B18 Features:
- Acrylic chemistry
- Fast drying
- Single-component
- Compatible with various thinner types for different application environments
- Recognized under UL File Number E105698
- Excellent moisture and environmental protection
- High flexibility
- Fluorescence under UV light for easy inspection
- Reworkable for ease of repair
- IPC-CC-830 compliance
- RoHS Directive 2015/863/EU compliant
HumiSeal® 1B18 Applications:
- Ideal for substrates cleaned or assembled with low-residue “no clean” materials
- Contact HumiSeal technical support for more details on compatibility and application
About Prostech
Prostech Philippines is a one-stop solution provider for specialty materials and equipment across electronics manufacturing, from PCBA to final assembly. Our core material and equipment solutions include:
- PCB Assembly Materials
- Cleaning & Degreaser
- Circuit Board Protection
- Thermal Management Solutions
- EMI Shielding
- General Assembly Adhesives
- Elastomeric Materials
- Process Equipment: Potting & Coating Systems, UV/ Heat Curing, Plasma Treatment, Tape placement automation, and cleaning machines
Technical Added Value to customer
Prostech offers customized material and process equipment solutions with engineering support throughout R&D, production process optimization, and performance validation. Our in-house lab located in Alabang, Muntinlupa is equipped to conduct electronics material testing, application simulation, and adhesive validation, helping customers reduce the need for onsite trials and accelerate implementation.
International Supply Chain Advantage
Regional warehouse hubs across Vietnam, Singapore, Malaysia, and the Philippines ensure cross-border reliable supply. In Philippines PEZA-bonded warehouse located at Lima Industrial Park, Batangas enables Prostech to provide responsive, demand-based delivery and significantly shortens standard lead time for Philippines customers.
Need help selecting the right product or solution?
| Product Specification | |
| Density, per ASTM D1475 | 0.92 ± 0.02 g/cm³ |
| Solids Content, % by weight per Fed-Std-141, Meth. 4044 | 30 ± 2 % |
| Viscosity, per Fed-Std-141, Meth. 4287 | 250 ± 20 centipoise |
| VOC | 654 grams/litre |
| Drying Time to Handle per Fed-Std-141, Meth. 4061 | 30 minutes |
| Recommended Coating Thickness | 25 – 75 microns |
| Recommended Curing Conditions | 24 hrs @ RT or 2 hrs @ 76°C |
| Time Required to Reach Optimum Properties | 7 days |
| Recommended Thinner | HumiSeal Thinner 73 |
| Recommended Stripper | HumiSeal Stripper 1080 |
| Shelf Life at Room Temperature, DOM | 24 months |
| Thermal Shock, 50 cycles per MIL-I-46058C | -65°C to 125°C |
| Coefficient of Thermal Expansion – TMA | 67 ppm/°C |
| Glass Transition Temperature – DSC | 42°C |
| Modulus – DMA | 11.1 MPa |
| Flammability, per UL 94 | V-0 |
| Dielectric Withstand Voltage, per MIL-I-46058C | >1500 volts |
| Dielectric Breakdown Voltage, per ASTM D149 | 6300 volts |
| Dielectric Constant, at 1MHz and 25°C, per ASTM D150-98 | 2.6 |
| Dissipation Factor, at 1MHz and 25°C, per ASTM D150-98 | 0.01 |
| Insulation Resistance, per MIL-I-46058C | 5.5 x 1014 ohms (550TΩ) |
| Moisture Insulation Resistance, per MIL-I-46058C | 7.0 x 109 ohms (70GΩ) |
| Fungus Resistance, per ASTM G21 | Passes |
