NASA Low Outgassing Rated Epoxy Features Enhanced Chemical Resistance
Master Bond EP42-2LV Black is a two-part epoxy with low viscosity and good flow. This system can be used for bonding, sealing, coating, and casting, where a strong chemical resistance profile is required.
This compound has a mix ratio of 100 to 40 by weight or 100 to 50 by volume with Part A being black and Part B being light amber. The viscosity of the mixed system is around 1,000-2,000 cps, and it has a working life of 60 to 90 minutes per 100 gram batch. EP42-2LV Black cures optically opaque at room temperature in 2 to 3 days or at elevated temperatures of 200°F in 2 to 3 hours. For optimal performance, the recommended cure schedule is overnight at room temperature followed by heat curing at 150-200°F for 2 to 4 hours. (Image source: Master Bond)