Product Introduction
HumiSeal® 1B73 is a high-performance acrylic conformal coating in aerosol form. It provides excellent transparency and inspection traceability along with robust thermal shock resistance, making it ideal for environments where visual inspection and reliability are critical. This product is highly resistant to moisture and thermal exposure, meeting the standards required for various electronic applications.
HumiSeal® 1B73 Features:
- Highly transparent acrylic finish
- UV tracer enabled
- Moisture and thermal resistance
- RoHS and IPC-compliant
HumiSeal® 1B73 Applications:
- Telecommunication circuit boards
- Electronic sensors and controls
- Environmental stress protection
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?
| Density | 0.74 ± 0.02 g/cm³ |
| Solids Content | 7 ± 1 % |
| VOC | 687.5 grams/litre |
| Drying Time to Handle | 30 minutes |
| Recommended Coating Thickness | 25 - 75 microns |
| Curing Conditions | 24 hrs @ RT or 2 hrs @ 76°C |
| Time to Reach Optimum Properties | 7 days |
| Shelf Life | 24 months |
| Thermal Shock | -65°C to 125°C |
| Coefficient of Thermal Expansion | 67 ppm/°C |
| Glass Transition Temperature | 42°C |
| Modulus | 11.1 MPa |
| Dielectric Withstand Voltage | >1500 volts |
| Dielectric Breakdown Voltage | 6300 volts |
| Dielectric Constant | 2.6 |
| Dissipation Factor | 0.010 |
| Insulation Resistance | 5.5 x 10¹⁴ ohms (550TΩ) |
| Moisture Resistance | 7.0 x 10¹⁰ ohms (70GΩ) |
| Fungus Resistance | Passes |



