• Low stress
• Low viscosity
• Excellent wicking
• Good high temperature performance
• Resistant to mechanical impact
• Excellent thermal shock resistance
• Tough adhesion to a wide variety of fiber optic and optic materials
• Color keyed formulation that indicates cure status

LOCTITE ECCOBOND F 253 two-part epoxy is formulated to change color during the cure process to indicate the cure status. LOCTITE ECCOBOND F 253 bonds offer resistance to water and weathering, gasses and vapors, petroleum products and other organic and inorganic compounds LOCTITE ECCOBOND F 253 passes NASA outgassing standards.