Product Introduction
HumiSeal® 503 is a versatile thinner used to reduce viscosity and optimize application for multiple coating types, including 1B12, 1B31, 1B66, and 1B73. It ensures controlled application techniques such as spraying, brushing, and dipping while maintaining the coating’s protective properties. HumiSeal® 503 is engineered for high-performance results and is fully compliant with the RoHS Directive 2002/95/EC, making it suitable for use in environmentally regulated industries.
HumiSeal® 503 Features:
- Reduces viscosity for controlled application
- Compatible with multiple HumiSeal® coatings
- Preserves coating’s protection capabilities
- Fully RoHS-compliant
HumiSeal® 503 Applications:
- Ideal for spraying, brushing, or dipping
- Suitable for use in environmentally regulated industries
- Used for high-performance results in various coating processes
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?
| Thinner | 64 | 73 | 503 | 505 | 521 | 535 |
|---|---|---|---|---|---|---|
| Compatible HumiSeal® Coatings | 2A64 | 1B73 | 1B12, 1B31, 1B66, 1B73 | 1R32, 1R32A-2 | 1A20, 1A27, 1A33, 1B31, 1B66, 1B73, 1R32 | 2A53 |
| Relative Evaporating Rate (BuAc=1) | 0.89 | 1.0 | 3.77 | 1.65 | 0.60 | 1.50 |
| Specific Gravity | 0.95 ± 0.01 | 0.88 ± 0.01 | 0.85 ± 0.01 | 0.83 ± 0.01 | 0.87 ± 0.01 | 0.87 ± 0.01 |
| Boiling Point (°C) | 110 | 127 | 82 | 117 | 137 | 110 |
| Vapour Pressure (mmHg) | 9.1 | 8.0 | 45.4 | 15 | 19.4 | 45.4 |
| Vapour Density (Air=1) | 3.4 | 4.0 | 4.0 | 3.5 | 3.6 | 4.0 |
| Flash Point (°C) TCC | 5 | 27 | -1 | 14 | 27 | 5 |
| VOC (grams/litre) | 950 | 882 | 850 | 830 | 868 | 868 |
| Shelf Life, DOM | 24 months | |||||
| Colour | Clear | |||||



