Thermally Conductive Potting Compound 2.0W/m·K UL94 V-0 Waterproof Silicone for Energy Meter Sealing Protection Waterproof Potting Compound HN-8820 for Energy Meter Sealing & Enclosure Protection HN-8820 is a waterproof and anti-aging electronics potting compound with 2.0 W/m·K thermal conductivity and UL 94 V-0 flame retardant certification. Purpose-engineered for energy meter sealing, outdoor electronic enclosures, and utility equipment protection, this silicone encapsulant