DOWSIL 3140 electronic component sealant Protective Coating for Circuit Boards

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

Shenzhen Huazhisheng New Materials Technology Co., Ltd. is a leading provider of environmentally friendly adhesives and technical solutions, specializing in the application of modified silicone rubber, epoxy adhesives, thermal materials, bonding adhesives, encapsulation adhesives, and UV adhesives across various industries such as electronics, home appliances, LED lighting, automotive, consumer electronics, rail transit, aerospace, and electrical power. Huazhisheng New Materials adheres to the corporate sustainable development strategy of "Progress, Innovation, Professionalism, and Integrity," and integrates the philosophy of "Quality, Efficiency, Environment-Friendly, and Reliability" throughout the entire product lifecycle. Our products have passed SGS, UL, FDA, DIN, and non-toxic certifications, and have been awarded multiple global patents, making us one of the primary suppliers of adhesives and new materials in China's new energy, electronics, automotive, industrial, packaging, environmental protection, construction, and high-speed rail sectors.
With an innovative perspective, we offer customized solutions, continuously develop leading technologies, and provide comprehensive support to clients across various industrial sectors. We are committed to collaborating with our clients to drive industrial transformation and upgrading, ensuring your sustained competitive edge.
Based on advancements in various polymer chemical materials, Huazhisheng New Materials has established a leading position in four key areas: coating, bonding, sealing, and thermal conductivity. Our efficient and environmentally friendly adhesive products and technical solutions help industrial enterprises enhance production efficiency and benefits, protect your electronic products from external chemical agents and harsh usage environments, and extend their lifespan, ensuring continuous and stable operation.