DOWSIL 3145 RTV MIL-A-46146 Clear Adhesive Sealant For Electronic Module Sealing
Product Introduction of DOWSIL™ 3145 RTV MIL-A-46146 Adhesive Sealant-Clear
Part 1: Basic Properties
DOWSIL™ 3145 is a one-part, clear, room-temperature-curing silicone sealant compliant with MIL-A-46146 Group II TY I military standards. It features high tensile strength (864 psi), high elongation (626%), and excellent electrical properties (dielectric strength 485 V/mil), making it ideal for sealing and assembly in electronic devices.
Part 2: Product Description
DOWSIL™ 3145 cures without mixing or heating, achieving tack-free in ~63.8 minutes at 25°C and >90% physical properties within 24-72 hours. Its non-flow特性 (0.092-inch slump) and low viscosity (168 Pa-sec at 10/s) enable precise dispensing, while offering superior unprimed adhesion to metals, ceramics, and glass (lap shear strength 336 psi on aluminum).
Part 3: Key Features
- Military Compliance: Certified to MIL-A-46146 Group II for reliability in harsh environments.
- Electrical Insulation: Volume resistivity 4.4×10¹⁴ ohm·cm, dielectric constant 2.83 (100 Hz–100 kHz), ideal for high-frequency electronics.
- Temperature Resistance: Operational from -45°C to 200°C long-term, with short-term tolerance to -55°C or beyond (verification required).
Part 4: Applications
| Application | Description |
| Electronic Module Sealing | Seals openings in housings against moisture/dust |
| PWB Assembly | Secures components on PWBs, reducing mechanical stress |
| Wire & Lead Sealing | Protects electrical leads from environmental damage |
| Military Equipment | Weather-resistant bonding for MIL-spec applications |
Parameter Table
| Property | Unit | Value |
| Tensile Strength | psi | 864 |
| Elongation | % | 626 |
| Tear Strength (Die B) | ppi | 223 |
| Dielectric Strength | V/mil | 485 |
| Volume Resistivity | ohm·cm | 4.4×10¹⁴ |
| Cure Time (25°C) | minutes | 63.8 (tack-free) |
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
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