2-part, toughened, medium viscosity, industrial grade solid epoxy adhesive.LOCTITE EA E-90FL is a gray, opaque, 2-part, toughened, medium viscosity, industrial grade solid epoxy adhesive. After curing at room temperature, it forms a flexible, gray bondline with excellent resistance to shock and impact, a wide range of chemicals and solvents and acts as an excellent electrical insulator. Suited for low-stress, high-impact bonding applications of dissimilar materials.