UL 94 Flammability V-0 Fire-Resistant Epoxy Potting Resin for Electrical Transformers & Coils
LW-8128A/LH-8116: UL 94 V-0 Crystal Clear Epoxy Potting Resin for Electronic Connectors | Hand-Pour Application
Product Overview
LW-8128A/LH-8116 is a premium two-component, crystal clear epoxy potting system engineered for hand-pour encapsulation of sensitive electronics. Featuring UL 94 V-0 flame resistance, modified PBA epoxy resin (LW-8128A), and a modified amine hardener (LH-8116), this system delivers exceptional clarity, electrical insulation, and fire safety for electronic connectors, sensors, and micro-transformers. With room-temperature curing and vacuum-compatible processing, it ensures bubble-free protection against moisture, chemicals, and thermal stress.
Key Features & Benefits
| Property |
Specification |
Benefit |
| Flame Resistance |
UL 94 V-0 Certified |
Prevents fire propagation in electrical failures |
| Clarity |
Crystal Clear (Custom Color Options) |
Aesthetic transparency for visual inspection of components |
| Curing |
Room-Temperature Cure |
Energy-efficient processing; no ovens required |
| Processing |
Hand-Pour or Vacuum Casting |
Flexible for low-volume batches or precision vacuum impregnation |
| Electrical Safety |
High Dielectric Strength |
Reliable insulation for connectors operating under electrical stress |
| Compatibility |
Pre-Mixed Fillers & Color Paste |
Uniform consistency; reduces mixing errors |
Applications
Ideal for encapsulating:
- Electronic connectors (signal, power, PCB headers)
- Miniature transformers and inductors
- Sensor modules and LED arrays
- Insulation bobbins and coil terminals
- Wearable electronics and IoT devices
Technical Specifications
| Epoxy Resin |
LW-8128A (100 pbw) |
| Curing Agent |
LH-8116 (20-25 pbw) |
| Color Paste |
LC Series (1 pbw, optional) |
| Viscosity |
Paste Consistency (25°C) |
| Pot Life |
40-60 minutes (25°C) |
| Cure Time |
24-48 hours (25°C) |
| Hardness (Shore D) |
≥85 |
| Certification |
UL 94 V-0 Flame Rating |
Processing Guide
- Mixing: Blend LW-8128A resin and LH-8116 hardener at 100:22.5 pbw (default ratio). Add LC-series color paste if required.
- Degassing: Vacuum degas mixture (recommended for bubble-free clarity).
- Pouring: Hand-pour or gravity-cast over components.
- Curing: Cure 24h at 25°C (accelerated curing at 60°C optional).
Why Choose This System?
- Flame Safety: Meets stringent UL 94 V-0 standards for electronics in high-risk environments
- Ease of Use: Paste consistency simplifies manual application without sagging
- Optical Clarity: Maintains component visibility for QC inspections
- Adaptable: Integrates with existing hand-pour or vacuum production lines
Package Image
Shipment Image
Example Application Image