HANAST HN-5508 A/B Chemical Resistant Black Epoxy Potting Compound (Bulk Supply) for Electronics and Transformer Encapsulation HN-5508 A/B is a two-component, room-temperature or heat-curable epoxy potting compound engineered for chemical and mechanical protection of industrial electronics. Mixed at a 5:1 ratio by weight, it flows with low viscosity and long pot life, penetrates narrow gaps, and cures into a smooth, glossy, high-hardness (Shore D 85-95) black encapsulant. Its