DOWSIL 3140 electronic component sealant Protective Coating for Circuit Boards

Product Introduction of DOWSIL™ 3140 RTV Coating

Basic Product Attributes

DOWSIL™ 3140 is a one-part, translucent, room-temperature vulcanizing (RTV) silicone coating/adhesive with excellent flowability and self-leveling properties. It is solvent-free, moisture-cured, and certified to UL 94 V-1, IPC-CC-830B, and military standards MIL-A-46146 and MIL-I-46058C. Ideal for electronics protection and circuit board encapsulation.

Product Description

DOWSIL™ 3140 cures at room temperature (25°C) without ovens, reducing energy consumption and production costs. The cured elastomer offers excellent electrical insulation (dielectric strength 385 V/mil) and weather resistance (operating range -45°C to 200°C). Its UV indicator feature aids in manual/automated inspection of coating quality.

Special Properties

Flame Resistance: UL 94 V-1 certified (1.4 mm thickness) for fire-sensitive applications.
Fast Processing: Tack-free time 116 min (25°C), accelerable with mild heat (<60°C).
Adhesion: Bonds well to metals, ceramics, glass, and select plastics (peel strength 40 ppi).
Eco-Friendly: Solvent-free with 95.7% non-volatile content (NVC).

Applications

Electronics Protection: Corrosion-sensitive components, rigid/flexible PCB coating.
Encapsulation: Pin sealing, solder joint coverage, thin-section potting.
Industrial Uses: Sensor encapsulation, LED component protection (model-specific verification required).

Technical Data Table

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