LE-9265/LH-9265: High Tg UL 94 V-0 Epoxy for HV Insulators &
Bushings | APG/Vacuum Casting
Product Overview
LE-9265/LH-9265 is a modified cycloaliphatic epoxy resin
system engineered for high-voltage insulators, bushings,
and contact boxes (12–40.5 kV). Combining UL 94 V-0 flame
resistance, extreme weather durability, and high thermal stability
(Tg >150°C), this unfilled liquid resin delivers void-free
insulation for outdoor power infrastructure. Compatible
with Automatic Pressure Gelation (APG) and vacuum
casting, it ensures superior dielectric strength (>18 kV/mm) and
CTI >600 V for decades of reliable service.
Key Features & Benefits
| Property | Advantage |
|---|
| Weather Resistance | Withstands UV, humidity, and pollution – ideal for outdoor
bushings. |
| Flame Safety | UL 94 V-0 certified – prevents fire propagation in electrical
faults. |
| Thermal Performance | High Tg (>150°C) + thermal shock resistance – stable under load
cycles. |
| Electrical Integrity | CTI >600 V, high dielectric strength – resists tracking/arcing. |
| Processing Flexibility | APG or vacuum casting – integrates with existing production lines. |
| Long-Term Reliability | Resists cracking, hydrolysis, and chemical corrosion. |
Applications
12–40.5 kV switchgear: Contact boxes, cable terminations
Outdoor bushings & insulators
Transformer bushings and surge arresters
Railway/utility power distribution insulation
Technical Specifications
| Component | Part | Ratio (pbw) | Form |
|---|
| Epoxy Resin | LE-9265 | 100 | Liquid (unfilled) |
| Anhydride Hardener | LH-9265 | 100 | Liquid |
| Silica Filler | WY-12X | 250–270 | Optional |
| Color Paste | LC Series | 3 | Optional |
Cured Properties:
Glass Transition Temp (Tg): >150°C
Dielectric Strength: >18 kV/mm
Comparative Tracking Index (CTI): >600 V
UL 94 Rating: V-0
Thermal Shock Resistance: >1,000 cycles (-40°C to +125°C)
Processing Methods
Automatic Pressure Gelation (APG):
Vacuum Gravity Casting:
Why Choose This System?
Weatherproof: Cycloaliphatic base resists yellowing/erosion in
harsh environments.
Safety Compliance: Meets UL 94 V-0, IEC 60137, and ASTM D2303
standards.
Customizable: Adjust filler ratios (WY-12X) for
viscosity/mechanical needs.
Zero Voids: Ensures partial discharge-free insulation for HV
applications
Package Image
Shipment image
Example application image
