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NOA 139
General purpose adhesive for bonding doublets, prisms or mounting components.
Cure: UV
Adhesion To
Glass: Excellent
Metal: Good
Plastic: Good to Excellent
Typical Properties
Color: Clear
Viscosity at 25 Degrees C: 865CPS
Refractive Index (Liquid): 1.37
Refractive Index (Cured): 1.388
Modulus PSI: 14,850
Tensile PSI: 807
Elongation at Failure: 51%
Shore D Hardness: 45