Shinetsu KE-45 room temperature curing (oxime) silicone sealant - electronic adhesive

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.

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