DOWSIL™ SE 9186 L is a solventless RTV conformal coating that cures with atmospheric moisture, eliminating the need for ovens. Available in multiple viscosities, it supports various application methods and offers fast, heat-accelerated curing. Once cured, it forms a soft elastomer that relieves stress on delicate components and provides reliable environmental and mechanical protection. With controlled volatility, no added solvents, and UL recognition, it is ideal for extending the service life of electronic assemblies.

• Fast Surface Cure - DOWSIL™ SE 9186 L achieves a tack-free surface within 8 minutes at 25°C and 50% relative humidity, verified through ISO 9046 standard testing. This rapid curing behavior allows faster assembly transfer and handling, significantly improving throughput in automated electronic manufacturing. The quick surface film formation minimizes dust or particle contamination before full cure, ensuring a clean, uniform layer over sensitive components.

  
  

• Flowable Application - The material’s viscosity of 27,000 cP provides an ideal balance between fluidity and shape retention. Tests following ASTM D1084 confirm that the silicone spreads evenly without sagging, achieving consistent coating thickness even on complex geometries. This flowable characteristic supports both spray and precision dispensing, ensuring accurate coverage in large-scale production.

  
  

• Soft Elastic Layer - Once cured, DOWSIL™ SE 9186 L forms a soft, flexible elastomer with Shore A hardness of approximately 25 and elongation exceeding 250%, based on ASTM D412 testing. This low-stress structure effectively relieves mechanical and thermal strain on delicate components, maintaining circuit reliability in dynamic vibration or temperature variation conditions.

  
  

• Low Volatility Formula - Designed with controlled silicone molecular weight distribution, the formulation minimizes low-molecular-weight siloxane migration. ASTM E595 outgassing tests show total mass loss below 0.8%, ensuring minimal contamination in cleanroom or enclosed electronic environments. This makes it ideal for high-precision applications where residue control and material stability are essential.

  
  

• Solvent-Free Composition - The absence of added solvents or volatile compounds supports safe handling and minimizes VOC emissions. Gas chromatography analysis confirms total volatile organic content under 0.5%, reducing operator exposure and improving environmental compliance. This property ensures stable curing consistency without shrinkage or odor emission during production.

  
  

• Room Temperature Cure - The adhesive cures entirely at room temperature under 30–80% humidity, achieving over 90% of mechanical properties within 24–72 hours. Mild heating below 60°C can accelerate this process, providing production flexibility. Verified under ASTM C679 testing, this curing system eliminates oven requirements, lowering energy consumption and simplifying workflow.

• Electronics Manufacturing - DOWSIL™ SE 9186 L is widely used for conformal coating and environmental protection of printed circuit boards, sensors, and modules. Its flowable, solvent-free formulation ensures uniform coating without air bubbles, while the soft elastomer structure provides effective vibration dampening and long-term insulation reliability.

  
  

• Telecommunication Devices - Applied for sealing and protecting connectors and components in telecom equipment, it delivers consistent moisture and dust protection. The controlled volatility prevents contamination of optical or signal transmission elements, ensuring stable communication performance under continuous operation.

  
  

• Automotive Electronics - Used for coating and protecting under-hood and in-cabin electronic assemblies exposed to temperature fluctuations and vibration. Its fast tack-free cure and flexible cured layer prevent mechanical fatigue and extend the lifespan of electronic control units.

  
  

• Industrial Controls - Suitable for sensors, control boards, and electrical assemblies in factory environments. The low-stress cured silicone protects against heat and vibration while maintaining stable dielectric strength, reducing failure rates in automated machinery systems.

  
  

• Appliance Manufacturing - Provides protective coating and sealing for internal electrical parts in home and industrial appliances. Its solvent-free, UL-recognized formulation ensures flame safety and long-term adhesion to metal and plastic substrates, improving product reliability and safety compliance.