ShinEtsu KE-445 One-Component RTV Sealant - Elastic Solution for Electronics
Product Overview
Shin-Etsu KE-445 is a one-component, room-temperature vulcanizing (RTV), self-leveling silicone sealant that cures into a flexible and durable elastomer. Featuring a neutral cure system, it is non-corrosive, low-odor, and provides excellent adhesion to metals, plastics, glass, and ceramics without requiring a primer.
Key Features
One-component, easy to apply – No mixing required, suitable for automated dispensing or manual application.
● Room-temperature cure – Fully cures in 7 days at 23°C/50% RH, with a 20-minute tack-free time.
● Self-leveling – Ideal for smooth surface sealing, forming a uniform and bubble-free layer.
● Low hardness & high elasticity – 25 Shore A hardness with 200% elongation for stress relief.
● Excellent electrical properties – 5 TΩ·m volume resistivity & 25 kV/mm dielectric strength for electronics.
Typical Applications
Electronics – Moisture-proof sealing for PCBs, sensors, and PV junction boxes.
● Automotive – Waterproofing & vibration damping for battery packs, headlights, and ECUs.
● Industrial – Form-in-place gaskets (FIPG) for machinery and pipe flanges.
● Medical – Housing bonding & sealing, compliant with biocompatibility standards.
| Property |
Value |
| Type |
Adhesive/Sealant |
| Cure Type |
Condensation |
| Component |
One |
| Color |
Black, White, Translucent |
| Density @23°C (g/cm³) |
1.05 |
| Viscosity (cps) |
5,000 |
| Cure Conditions |
7 days @23°C/50% RH |
| Tack Free Time (min) |
20 |
| Shore A Hardness |
25 |
| Tensile Strength (MPa) |
2.0 |
| Elongation (%) |
200 |
| Shear Strength [Al/Al] (MPa) |
0.3 |
| Volume Resistivity (TΩ·m) |
5 |
| Dielectric Strength (kV/mm) |
25 |
| Dielectric Constant @50Hz |
2.8 |
| Dissipation Factor @50Hz |
5×10⁻³ |
| Thermal Conductivity (W/m·K) |
0.21 |
| Service Temp. Range (°C) |
-40 to +180 |
1. Who are we?
We are Shenzhen Huazhisheng New Material Technology Co., Ltd., a professional industrial adhesives and sealants supplier based in China since 2018. we serve global markets: Mainland China (60%), Southeast Asia (20%), North America (10%), and Europe (10%).
2. What products do you offer?
we supply high-performance adhesives and sealants from global leaders including:
Cemedine, Dow Corning, Shin-Etsu, Araldite, and Momentive,etc.
3. How do you guarantee product quality?
Quality assurance through:
Mandatory pre-production samples approval
Final inspection by QC team before shipment
International certifications: SGS, UL, FDA, RoHS, REACH
4. Why choose us over other suppliers?
Reliable Supply:Authentic products from top manufacturers
Expert Support:Technical guidance for product selection
Global Compliance:Certifications meeting target market standards
Efficient Service:Customized solutions & professional support
5. What services do you provide?
Delivery:EXW/FOB/CIF
Payment:USD/EUR/CNY/HKD via T/T, L/C
Support:Technical consultation & logistics coordination
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