DOWSIL 3140 RTV Coating Single Part Silicone Adhesive for PCB Protection

DOWSIL 3140 RTV Coating Single Part Silicone Adhesive for PCB Protection

Product Introduction of DOWSIL™ 3140 RTV Coating

Basic Product Attributes

DOWSIL™ 3140 is a one-part, translucent room-temperature vulcanizing (RTV) silicone coating with excellent flowability, flame resistance (UL 94 V-1 certified), and electrical insulation properties. It requires no mixing or added solvents, enabling fast in-line processing.

Product Description

DOWSIL™ 3140 cures via moisture to form a flexible elastomer, achieving over 90% physical properties within 24–72 hours at 25°C. Its low viscosity (34,400 cP) allows self-leveling or filling narrow gaps, with UV indicators for automated inspection. Compliant with IPC-CC-830B and military standards (MIL-A-46146), it is ideal for electronic protection in harsh environments.

Special Properties

Flame Resistance: UL 94 V-1 (1.4 mm thickness) and HB (1.9 mm thickness) certified.
Electrical Properties: High volume resistivity (2.1×10¹⁴ ohm·cm) and stable dielectric constant (2.52 at 100 Hz–100 kHz).
Adhesion: Excellent adhesion to reactive substrates (metals, ceramics, glass) but requires pretreatment for non-reactive surfaces (e.g., polypropylene).
Cure Acceleration: Heat below 60°C can accelerate curing.

Applications

Parameter 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