Thermally Conductive Potting Compound HN-8820 2.0W/mK Silicone Encapsulant For EV Battery Module Heat Dissipation Product Overview HN-8820 is a high-performance two-part addition-cure silicone potting compound manufactured by Shenzhen Hanast New Material Co., Ltd. Engineered specifically for EV battery module heat dissipation , energy storage systems, and power electronics, this RTV-2 silicone encapsulant delivers 2.0W/mK thermal conductivity with UL 94 V-0 flame retardant