• Item Name: INSULCAST 333
• Manufacturer: ITW Performance Polymers
• Technologies: Two-component epoxy with flame-retardant properties, self-extinguishing, UL94 V-0 recognized
• Color: INSULCAST 333 – Black, INSULCURE 9/20/11B – Amber
• Cure Type: Ambient and heat cure depending on curing agent
• Package Size: Contact to Techniq VN for details.
• Shelf Life: 12 months
INSULCAST 333 is a moderate-viscosity, self-extinguishing epoxy potting and casting compound recognized under UL94V-0. Designed for safety and reliable performance, it offers ease of handling, good mechanical strength, electrical insulation, and thermal stability. Compatible with multiple curing agents (INSULCURE 9, 20, 11B), it is suitable for applications requiring flame-retardant properties and moderate-to-high service temperatures.
Potting and casting of electronic components
Flame-retardant encapsulation requiring UL94V-0 rating
Protection of assemblies from moisture, vibration, and environmental stress
Electrical insulation in moderate-to-high temperature applications
Use with different curing agents for tailored service temperature ranges
| Property | INSULCAST 333 | INSULCURE 9 | INSULCURE 20 | INSULCURE 11B | Mixed |
|---|---|---|---|---|---|
| Color | Black | Amber | Amber | Amber | — |
| Viscosity @25°C (cPs) | 13,000 | 55 | 700 | 700 | 2,000–3,000 |
| Specific Gravity | 1.55 | 0.97 | 0.98 | 0.95 | — |
| Mix Ratio (by wt.) | — | 100:12–16 | 100:8 | — | — |
| Pot Life @25°C (min) | 45 | 60 | 300 | — | — |
| Shelf Life @25°C | 12 months | 12 months | 12 months | 12 months | — |
| Property | INSULCURE 9 | INSULCURE 20 | INSULCURE 11B |
|---|---|---|---|
| Hardness (Shore D) | 85 | 85 | 85 |
| Tensile Strength (psi) | 11,500 | 11,500 | 12,000 |
| Tensile Elongation (%) | 2.75 | 2.75 | 3.75 |
| Flexural Strength (psi) | 17,500 | 17,500 | 19,500 |
| Compressive Strength (psi) | 14,000 | 14,000 | 14,500 |
| Coefficient of Thermal Expansion | 48×10⁻⁶ | 48×10⁻⁶ | 48×10⁻⁶ |
| Thermal Conductivity | 4.2–4.3 BTU-in/(ft²·hr·°F) | 4.3 | 4.2 |
| Flammability | UL94V-0 | Pass | Pass |
| Heat Distortion Point (°C) | 80 | 80 | 155 |
| Service Temperature (°C) | –40 to 105 | –40 to 105 | –55 to 155 |
| Dielectric Strength (volts/mil) | 410 | 410 | 430 |
| Dielectric Constant (1 kHz) | 4.4 | 4.4 | 4.5 |
| Volume Resistivity (ohm-cm) | 1×10¹⁵ | 1×10¹⁵ | 1×10¹⁵ |
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