Dowsil 3140 is a translucent adhesive coating designed for electronic components. It offers excellent flowability, strong adhesion, and flame resistance, making it ideal for sealing, protecting, and lubricating delicate electronic assemblies. It ensures reliable performance under thermal and mechanical stress. No mixing or baking is required for general use and can be used at room temperature.

• Excellent Insulation - Dowsil 3140 exhibits excellent electrical insulation properties after curing, significantly improving the safety of electronic components. Its cured specific gravity of 1.05 ensures a uniform and dense coating structure, effectively preventing current leakage and creepage risks.

  
  

• Waterproof Performance - This product has a tack-free time of approximately 116 minutes at 25°C, forming a dense and continuous protective layer that effectively blocks moisture and liquid penetration. The cured coating remains stable in humid environments and is not susceptible to degradation due to moisture or condensation.

  
  

• Temperature Resistance - Dowsil 3140 maintains a stable structure under high and low temperature cycling conditions, preventing cracking or flaking caused by thermal expansion and contraction. Its stable extrusion rate of 121 g/min at room temperature ensures consistent application across various temperatures.

  
  

• Chemical Stability - The material's silicon-oxygen molecular structure imparts excellent chemical stability, effectively resisting the effects of acids, alkalis, and some corrosive media. After curing, it forms a stable coating on electronic components, reducing the risk of corrosion from salt spray or chemical exposure.

  
  

• Fast Curing - Dowsil 3140 is a one-component, room-temperature curing material, achieving tack-free performance in approximately 116 minutes at 25°C, significantly improving application efficiency. Its stable processability allows for more controlled dispensing and coating, reducing the risk of production line downtime.

  
  

• Flexible Protection - After curing, this product exhibits excellent flexibility, maintaining structural integrity despite mechanical vibration and minor impact. This flexibility makes the coating less prone to cracking when covering solder joints or small pins, effectively dissipating localized stress and preventing cold solder joints or damaged solder joints.

  
  

• Low Volatility - Dowsil 3140 exhibits low volatility, eliminating the release of significant amounts of small molecules after curing, thereby maintaining a clean operating environment. This advantage is particularly critical for applications requiring stringent cleanliness, such as optical components or sensors, where residues can affect accuracy and appearance.

• Electronics Industry - Dowsil 3140 is suitable for coating and dispensing PCBs, connectors, relays, and micro-coils. It is commonly used for component reinforcement around control boards, sensor modules, and display modules. Tube and 330ml cartridge packaging facilitates flexible transitions from maintenance stations to automated production lines, enabling trace encapsulation, solder joint coating, and edge sealing depending on the process.

  
  

• Power Industry - It is used for coating and stress buffering around module power supplies, transformer lead areas, and high-voltage terminals, reducing surface leakage current caused by dust and moisture. A uniform adhesive delivery rate of 121 g/min allows for continuous dispensing on complex geometries. Combined with a room-temperature curing process, it reduces on-site maintenance time and facilitates in-situ repairs on power cabinets and controllers.

  
  

• Telecommunications Industry - It is used for protecting and sealing main control boards, power amplifier boards, and connectors in base stations, routers, and optical communication equipment. It also covers the periphery of high-density BGA and LGA components and the edges of RF shielding covers. Its low volatility makes it suitable for use in the same cavity as optical windows, indicator lights, and camera modules, reducing potential failure points under long-term on-off operation and ambient temperature fluctuations.

  
  

• Automotive Industry - Suitable for coating and light bonding of ECUs, T-Boxes, headlight drivers, and sensor control boards, including edge sealing of solder joints, plug-ins, and wiring harness vias. Its flexible support mitigates the impact of road vibration on solder joints, and its transparent to slightly misty appearance facilitates post-assembly visual inspection and repair.

  
  

• Industrial Equipment - Dowsil 3140 is suitable for protecting and insulating PLC control boards, inverters, servo drives, and various sensor and acquisition modules. Its smooth, dense film build creates a coating around terminal blocks, heat sink edges, and screws, reducing the impact of metal dust, oil mist, and condensed water on circuits. It can also be used in conjunction with common housing materials, facilitating cleaning and resetting equipment during manufacturing and maintenance.

  
  

• Household Appliances - Dowsil 3140 is used for moisture-proofing and sealing control panels, display panels, and keypads in air conditioners, refrigerators, washing machines, and kitchen appliances. It reinforces the transition between connectors and wiring harnesses, reducing the impact of detergents, moisture, and temperature fluctuations in the home environment on circuits.