Master Bond Polymer System EP21CLV compound is a two component epoxy compound for general purpose bonding or casting formulated to cure at room temperature or more rapidly at elevated temperatures, with a one-to-one mix ratio, weight or volume. It readily develops a high bonding strength of more than 3000 psi at room temperature which unlike that of many other epoxy compounds, is relatively insensitive to mixing ratio or substrate cleaning procedures. It produces durable high strength and tough castings which are remarkably resistant to thermal cycling and chemicals including water, oil and most organic solvents, over the exceptionally wide temperature range of -60°F to more than 250°F. Adhesion to metals, glass, ceramics, wood, vulcanized rubbers and many plastics is excellent. The hardened material is an electrical insulator. Color of part A clear, part B amber clear. Master Bond EP21CLV system is widely used in the electronic, electrical, computer, construction, metalworking, appliance, automotive and chemical industries.