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Thermally Conductive Potting Compound

Silicone Potting Compound for Network Transformers: A B2B Encapsulation Guide

2026-10-13

What Is Network Transformer Potting?

Network transformer potting is the encapsulation of network transformers and their windings in a protective compound. A silicone potting compound cures into a flexible, insulating elastomer that seals the transformer against moisture, dust and vibration while dissipating heat.

Why Silicone Potting Suits Network Transformers

Electrical insulation for high-voltage isolation;
Heat dissipation from windings and cores;
Protection against humidity and corrosion;
Flame retardancy (UL94 V-0) for safety compliance;
Flexible cure that withstands thermal cycling without cracking.

Key Specifications (HN-8810A/B, 1.0 W/m·K)

Property	Value
Thermal conductivity	1.0 ± 0.1 W/m·K
Mix ratio	1:1 by weight
Volume resistivity	≥5.0 × 10¹⁴ Ω·cm
Flame retardancy	UL94 V-0
Operating temperature	−40°C to 150°C
Cure	Room temperature or 80°C for 10–20 min

Frequently Asked Questions

Which potting compound suits network transformers? A 1.0 W/m·K addition-cure silicone such as HN-8810A/B provides balanced thermal and insulation performance.

Does it protect against moisture? Yes — the cured elastomer is waterproof and moisture-proof.

Is it flame retardant? Yes — UL94 V-0.

Conclusion

For network transformers, silicone potting compound delivers insulation, heat dissipation and moisture protection in one easy-to-process material. Shenzhen Hanast New Materials supports B2B partners with samples and application guidance.