HANAST HN-5508 A/B High Reliability Electronics Grade Epoxy Potting Compound for Power Module, Aerospace and Defense Electronics Protection HN-5508 A/B is a two-component, room-temperature or heat-curable epoxy potting compound engineered for high-reliability, electronics-grade encapsulation. Mixed at a 5:1 ratio by weight, it flows with low viscosity and a long pot life, penetrates narrow gaps, and cures bubble-free into a smooth, glossy, high-hardness (Shore D 85-95) black