LOCTITE ECCOBOND F 123 is an epoxy adhesive that offers tough adhesion to a variety of substrates and is designed for use with fiber optic bundles, potting glass fibers, and fiber optic connectors.

LOCTITE® ECCOBOND F 123 is a fast-curing, low-viscosity epoxy adhesive that is formulated for terminating single or multi-channel fiber optic connectors. Resistant to mechanical impact, LOCTITE ECCOBOND F 123 offers excellent thermal resistance as well as resistance to water, weathering, gasses, petroleum products, and other organic and inorganic compounds. The product offers tough adhesion to most metals, ceramics, glass, and plastics and provides low-stress connections with no pistoning. The heat curing product is suitable for operating temperatures between -60 to 175°C.

The Loctite 1790511 Specifications: 

Cure schedule, @ 65.0 °C:  5.0 min.

• Cure type:  Heat cure
• Number of components:  2 part
• Operating temperature:  -60.0 - 175.0 °C
• Recommended for use with:  Metal
• Shear strength, Aluminum:  2900.0 psi
• Storage temperature:  27.0 °C
• Thixotropic index:  1.0