Epoxy meets NASA low outgassing requirements
Widely used for applications in the aerospace, electronic and OEM industries, Master Bond EP121CL-LO is a high performance epoxy that passes ASTM E595 testing for NASA low outgassing specifications. This two component system has a low mixed viscosity of 1,000-3,000cps with a mix ratio of 100:80 by weight. It features an exceptionally long open time of at least 2-3 days at room temperature in a 100g batch and requires oven curing.
EP121CL-LO adheres well to many substrates including metals, composites, glass, ceramics, rubbers and most plastics. It offers a high tensile strength, tensile modulus and compressive strength of over 12,000psi, 450,000psi and 15,000psi, respectively. This epoxy resists a variety of chemicals such as water, oils, acids, bases, fuels and many solvents. It has impressive optical clarity with a refractive index of 1.56.
With a volume resistivity exceeding 3x1014Ωcm at ambient temperatures, this electrical insulator is used for potting, encapsulation, coating and sealing applications. When used as a coating, EP121CL-LO can be conveniently applied with a spatula, knife, trowel, brush, paint roller, etc. This product has a service temperature range of -62 to +260°C. EP121CL-LO features a shelf life of a year in its original, unopened containers and is available in kits ranging from ½ pints to 5 gallons.
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