From the Manufacturer: HARDMAN Double Bubble Green-Label Epoxy 04004 Crystal-Clear (Clear as Water) is a two component, room temperature cure epoxy adhesive designed with a unique feature, dries totally transparent. It contains no solvents, and can also be used as a coating or finishing compound if needed. With its solventless feature, it can be applied over old coatings without raising them. It is self-leveling and blush-free so that it will cover and fill scratches. The cured system is effective over an operating temperature range of -34 C to 71 C (-30 F to 160 F). HARDMAN Double Bubble Green-Label Epoxy 04004 Crystal-Clear (Clear as Water) is recommended for the following surfaces: Stainless Steel, Aluminum, Other Epoxy Finishes, Glass, China, Crystal, and other fine surfaces. TYPICAL USES HARDMAN Double Bubble Green-Label Epoxy 04004 Crystal-Clear (Clear as Water) is designed to repair printed circuit boards (it also does not corrode copper), optical fibers, lenses and other optical equipment. It is an excellent repair epoxy for jewelry, art objects and other applications where a clear bond is needed or desired. Work Time: 60 minutes Handling Strength: 8 hours Color: Amber Dries: Crystal Clear Viscosity: 14,000 cps mixed