SYLGARD™ 170 Silicone Encapsulant Flexible Flame-Retardant Potting Solution for Electronics
Basic Properties
SYLGARD™ 170 is a two-part, 1:1 mix ratio black silicone elastomer featuring low mixed viscosity (2135 cP), moderate thermal conductivity (0.48 W/mK), and rapid curing at room temperature or with heat acceleration. It is UL 94 V-0 flame-rated and EN45545-2 HL3 certified for railway applications, ideal for electronic potting and encapsulation.
Product Description
Supplied as a two-part liquid, it cures into a flexible elastomer for PCB and electronic assembly protection. Curing is non-exothermic and independent of sectional thickness, requiring no post-cure. It enhances flow in narrow spaces and complex geometries, provides stress relief during thermal cycling, and prevents damage from rigid encapsulants. Adhesion requires a primer (standard version.
Enhanced Characteristics
- Processing Versatility: Low viscosity (Part A: 3160 cP / Part B: 1110 cP) ensures high flowability; 15-minute pot life at 25°C enables precise dispensing.
- Multi-Cure Options: 24-hour cure at 25°C / 25-minute heat cure at 70°C / 10-minute rapid cure at 100°C.
- Reliability: Volume resistivity 5.6×10¹⁷ Ω·cm, dielectric strength 18 kV/mm (100 Hz), flame resistance compliant with MIL-PRF-23586F.
Application Scenarios
Core Applications (per document): Power supplies, connectors, sensors, industrial controls, transformers, amplifiers, high-voltage resistor packs, relays.
Extended Use Cases (externally verified¹): EV battery management systems (BMS), railway signaling devices, high-voltage charging station circuitry.
Typical Properties
| Property | Unit | Result |
| Mix Ratio | – | 1:1 |
| Viscosity (Mixed) | cP | 2135 |
| Thermal Conductivity | W/mK | 0.48 |
| Working Time (25°C) | minutes | 15 |
| Cure Time (25°C) | hours | 24 |
| Cure Time (100°C) | minutes | 10 |
| Durometer Shore A | – | 47 |
| Dielectric Strength | kV/mm | 18 |
| Volume Resistivity | Ω·cm | 5.6×10¹⁷ |
| CTE (Linear) | ppm/°C | 275 |
| Certification | Standard | Level |
| UL Flame Rating | UL 94 | V-0 |
| Railway Standard | EN 45545-2 | HL3 (R22-R26) |
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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