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AA-BOND F125 High Temp Epoxy Adhesive, Fast Cure, Low Visc, 2 Part, Fiber Optic Connectors

AA-BOND F125 High Temp Epoxy Adhesive, Fast Cure, Low Visc, 2 Part, Fiber Optic Connectors
Product Code: AA-BOND F125
Availability: In Stock
This product has a minimum quantity of 1

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Technical Product Bulletin



AA-BOND F125 is a 8 minutes gelling epoxy recommended for use in fiber optic connectors, optical and industrial bonding applications.

AA-BOND F125 is clear, two part system is easily mixed and used at room temperature. Fiber optic connectors can be polished in as little as 15 to 20 minutes for piston free assurance. The high bond strength of AA-BOND F125 to glass, plastics, ceramics, metals and masonry allows it to be used in a wide array of applications including lens bonding, connector backfills, construction, component assembly and maintenance repair.

AA-BOND F125 is low shrinkage epoxy, develops significant properties 1 hour after mixing. However, an extended cure of 4-6 hours at 25°C is required for fully matured bonds.

NOTE: AA-BOND F125 develops a high exotherm. Use immediately after mixing. The exothermic reaction begins within 2 minutes after initiating the mixing step, so have everything ready before mixing.


Components 2 component - requires mixing
Mix Ratio by weight 100:95 / Resin:Hardener
Benefits Low viscosity
Fast Cure
Low shrinkage
Cure Type Room temperature or Heat cure
Operating Temperature -60 to 100 °C
Typical Applications Fiber optic assembly, multimode and single mode connectors, small potting and sealing applications
Appearance Transparent / Clear


Viscosity @ 25 °C Resin: 9000cP, Hardener: 14000cP
Specific Gravity 1.19
Pot Life 5 minutes


24 hours @ 25°C
1 hour @ 60°C


Glass Transition (Tg), ultimate, °C 40
Hardness, Shore D 75
Tensile Shear, alum to alum, psi 2800
Volume of resistivity 5.00e+11 ohm-cm
Dielectric Constant 4.8 @ Frequency 1000 Hz
Dielectric Strength 16.1 kV/mm 410 kV/in


For safe handling information on this product, consult the Material Safety Data Sheet, (MSDS).


1) Carefully clean and dry all surfaces to be bonded.

2) Apply AA-BOND F125 completely mixed adhesive to the prepared surfaces, and gently press these surfaces together. Contact pressure is adequate for strong, reliable bonds; however, maintain contact until adhesive is completely cured.

3) Some separation of components is common during shipping and storage. For this reason, it is recommended that the contents of the shipping container be thoroughly mixed prior to use.

4) Some ingredients in this formulation provided may crystallize when subjected to low temperature storage. A gentle warming cycle of 52°C for 30 minutes prior to mixing components may be necessary. Crystallized epoxy components do not react as well as liquid components and should be re-dissolved prior to use for best results.


This epoxy can be supplied in various different packages.

Data Sheets: TDS | MSDS available upon request.

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