Non-corrosive, silicone-based formulation safe for sensitive electronics and metal contacts.
Excellent dielectric strength (>20 kV/mm) for reliable electrical insulation under high-voltage conditions.
Thermally stable across a wide operating range (–40 °C to +200 °C).
Low volatility and non-migrating—maintains consistent performance without drying out or bleeding.
Easy-to-apply two-part kit (Part A + Part B) with controlled pot life and room-temperature cure.
High-voltage connector and busbar encapsulation in EV powertrains and battery systems.
Insulation and environmental protection of sensors and control modules in industrial automation.
Dielectric filling for LED driver housings and power supply assemblies.
Sealing and insulation of photovoltaic junction boxes and solar inverters.
Protection of aerospace avionics interfaces exposed to thermal cycling and humidity.
| Chemical Type | Two-component addition-cure silicone elastomer |
| Product Form | Liquid kit (Part A: base; Part B: catalyst) |
| Appearance | Translucent, viscous liquid (Part A); colorless to pale yellow liquid (Part B) |
| Primary Applications | Electrical insulation, environmental sealing, thermal management support |
| Key Features | Non-corrosive, low ionic content, UL 94 V-0 rated (cured) |
| Benefits | Long-term reliability, no post-cure required, compliant with RoHS and REACH |
| Cure System | Pt-catalyzed hydrosilylation |
| Shelf Life (unopened) | 12 months at 25 °C in original sealed containers |
Q1: What is the primary function of DOWSIL EG-4000 Kit Dielectric Gel?
A: DOWSIL EG-4000 Kit Dielectric Gel is a two-part silicone-based system formulated to provide long-term electrical insulation, thermal management, and environmental protection for sensitive electronic components—especially in high-voltage, high-reliability applications such as EV power electronics, battery modules, and renewable energy inverters.
Q2: How is the kit supplied, and what are the key handling considerations?
A: The kit is supplied as two separately packaged components—a base gel and a catalyst—designed for on-site mixing immediately prior to application. It requires careful metering and thorough mixing to ensure full cure and optimal dielectric performance. Avoid contamination during handling, and store components in sealed containers at recommended ambient conditions to preserve shelf life and reactivity.
Q3: Does this gel require heat curing, or can it cure at room temperature?
A: DOWSIL EG-4000 Kit offers flexible cure options: it cures at room temperature over several days, but cure time and final properties can be accelerated with mild elevated temperatures (e.g., 40–60 °C). The choice depends on production throughput requirements and part geometry—thicker sections may benefit from controlled thermal post-cure to ensure complete crosslinking throughout the bulk.
Q4: Is the cured gel resistant to common automotive and industrial fluids?
A: Yes, fully cured DOWSIL EG-4000 exhibits excellent resistance to automotive coolants, brake fluids, lubricants, and many industrial solvents—making it suitable for under-hood and battery-pack environments. Performance in aggressive chemical exposure should be validated under actual service conditions due to formulation-specific variables.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
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