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OVERVIEW
Silicone encapsulants are RTV silicone materials used to protect electronic components, connection points, LEDs, sensors, modules and electrical assemblies. After curing, they form a flexible protective layer that can help provide electrical insulation, moisture resistance, dust protection, stress relief and environmental sealing.
Different applications need different material properties. Some are better suited to soft, re-enterable silicone gel for cushioning and easier maintenance, while others require silicone potting compounds for more stable encapsulation and broader component protection.
| Project Requirement | Silicone Gel | Silicone Potting Compound |
|---|---|---|
| Very soft cured material | Recommended | Depending on grade |
| Minimum stress on sensitive components | Excellent starting direction | Good with softer grades |
| Easier future re-entry | Recommended | More limited |
| PCB and module encapsulation | Application-dependent | Recommended starting direction |
| Greater cured mechanical support | Limited | Better choice |
| Cable joints and connectors | Common direction | Application-dependent |
| Moisture/environmental protection | Yes | Yes |
| Automatic dispensing | Grade-dependent | Grade-dependent |
For LED modules and light components that require flexible protection, sealing, and optical or environmental stability.
For circuit boards that need insulation, moisture protection, vibration resistance, and more stable environmental sealing.
For cable accessory systems that require insulation, sealing and reliable environmental protection.
For connector protection against moisture ingress, contamination and mechanical stress.
Soft silicone encapsulation can help protect sensitive sensors while minimizing mechanical stress around components.
For encapsulation and protection of sensitive electrical and electronic assemblies.
Compare our two-part, platinum-cure silicone potting compounds for electronic insulation and encapsulation. Select a grade based on your requirements for hardness, viscosity, appearance, and mechanical protection.
| Technical Property | TE-8810 Low-Hardness Silicone | TE-8830 General-Purpose Silicone |
|---|---|---|
| Appearance | Transparent to translucent | Gray or white |
| Cure System | Platinum / Addition Cure | Platinum / Addition Cure |
| Mixing Ratio (A:B) | 1:1 by weight | 1:1 by weight |
| Mixed Viscosity at 25°C | 800 ± 500 mPa·s | 2,000 ± 500 mPa·s |
| Working Time at 25°C | 60–120 min | 60–120 min |
| Full Cure at 25°C | 6–12 hours | 6–12 hours |
| Cured Hardness | Shore A 10 ± 2 | Shore A 30 ± 2 |
| Typical Applications | Low-stress PCB protection, sensors and delicate electronics | General PCB potting, control modules and industrial electronics |
Discuss custom formulation options with Topsil’s technical team.
| Selection Factor | Why It Matters |
|---|---|
| Viscosity | Determines how easily the silicone flows through component gaps and cavities |
| Cured Hardness | Affects component stress, flexibility and mechanical support |
| Working Time | Must match manual or automatic dispensing speed |
| Cure Time | Influences production throughput and handling |
| Mix Ratio | Important for dispensing equipment and process control |
| Operating Temperature | Should match continuous and peak service conditions |
| Electrical Requirements | Grade-specific dielectric properties should meet project requirements |
| Thermal Requirements | Heat-generating assemblies may require additional thermal-performance evaluation |
| Color / Transparency | May matter for inspection, optical or appearance requirements |
| Evaluation Item | What We Check |
|---|---|
| A/B mixing | Ratio and mixing consistency |
| Flow behavior | Filling around components and cavities |
| Working time | Practical dispensing window |
| Cure | Cure condition and surface state |
| Cured material | Hardness and flexibility |
| Process | Manual or automatic dispensing suitability |
| Application | Performance in actual assembly geometry |
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This is Evan, the Manager of Topsil Silicone. Congratulations on finding a professional supplier! Pls send your inquiry, and we will contact you within 24 hours.
