Shinetsu KE-45 room temperature curing (oxime) silicone sealant - electronic adhesive
Product Basic Attributes
KE-45 is a one-component, room temperature curing silicone sealant based on silicone polymer technology, utilizing an oxime-cure mechanism. It cures upon exposure to atmospheric moisture, forming a flexible seal with excellent temperature resistance and rubber-like elasticity without requiring heat. It is available in a range of colors: Translucent, White, Black, Red, Reddish Brown, Brown, Gray, and Ivory.
Product Introduction
Shin-Etsu KE-45 Silicone Sealant is engineered to meet the bonding and sealing demands of the electronics industry. Its paste-like viscosity allows for easy dispensing and application, forming reliable electrical insulation and protective barriers. Upon full cure, KE-45 exhibits outstanding physical properties, including high elongation (350%), good tensile strength (2.0 MPa), and excellent adhesion strength to metals (e.g., Aluminum) and plastics (Tensile Shear Adhesion Strength 1.0 MPa). Its superior electrical insulation properties (Volume Resistivity 5 TΩ·m, Dielectric Strength 23 kV/mm, low Dielectric Constant 3.0, and low Dissipation Factor 0.005 at 50Hz) make it an ideal encapsulant and bonding material for electronic components. Curing occurs under standard conditions (23±2°C, 50±5% RH) in approximately 7 days.
Product Special Attributes
The core advantages of KE-45 lie in its exceptionally wide service temperature range (-40°C to +180°C), where it maintains excellent rubber elasticity for long-term sealing and bonding reliability. Its unique oxime-cure mechanism allows for convenient room temperature application. The product features good thermal conductivity (0.21 W/m·K), aiding heat dissipation from electronic components. KE-45 achieves UL94 HB flame retardancy, enhancing application safety. Its broad adhesion to various substrates (metals, plastics) is another key attribute. Important considerations: Its cure speed is influenced by ambient temperature and humidity; deep-section cure capability is limited, making it unsuitable for large-area bonding; it releases oxime during cure, requiring good ventilation; it has been reported to potentially corrode copper metal; and electrical insulation properties may be temporarily reduced during the curing process.
Application Scenarios
KE-45 is widely used for bonding, sealing, potting, and coating in electronic and electrical equipment, particularly where superior electrical insulation, environmental sealing, temperature resistance, and shock/vibration damping are critical. Typical applications include:
Bonding and securing electronic components: Such as capacitors, resistors, coils, sensors, inductors, connector terminals, for fixation and vibration dampening.
Potting and sealing small electronic modules: Providing environmental protection, moisture/dust resistance, insulation, and mechanical support for PCBs, small control modules, power modules, LED modules, etc.
Sealing enclosures and joints: Waterproofing and dustproofing seals for electronic housings, end caps, junction boxes, etc.
| Parameter | Unit | Typical Value | Note |
| Appearance | - | Translucent, White, Black, Red, Reddish Brown, Brown, Gray, Ivory | Paste consistency |
| Viscosity | Pa·s | Paste | - |
| Skin Over Time | min | 6 | @ 23°C, 50% RH |
| Density @ 25°C | g/cm³ | 1.05 | - |
| Hardness (Shore A) | - | 30 | After full cure |
| Tensile Strength | MPa | 2.0 | - |
| Elongation at Break | % | 350 | - |
| Tensile Shear Adhesion Strength (Al) | MPa | 1.0 | To Aluminum |
| Volume Resistivity | TΩ·m | 5 | - |
| Dielectric Strength | kV/mm | 23 | - |
| Dielectric Constant (50Hz) | - | 3.0 | - |
| Dissipation Factor (50Hz) | - | 0.005 | - |
| Thermal Conductivity | W/(m·K) | 0.21 | - |
| Flame Retardancy | UL94 | HB | - |
| Cure Condition | - | 7 days @ 23±2°C / 50±5% RH | Full cure properties |
| Service Temperature Range | °C | -40 to +180 | Continuous use |
| Storage Temperature | °C | 1 to 25 |
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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