Epoxy De-gassing

Published: October 17, 2018

, Last updated: September 17, 2025

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Epoxy De-gassing:

When a two-part epoxy is mixed, it is very likely now filled with many small air bubbles. These bubbles MUST be removed prior to injection into a ferrule (production lines commonly use centrifuges or vacuum chambers to remove gasses / bubbles trapped within the epoxy after mixing). Any air-bubbles or voids trapped within the cured epoxy may cause excessive stresses on the fiber during the product’s life cycle (most commonly due to changes in temperature, which will cause the gasses trapped in the bubbles to expand much more than the surrounding epoxy). Such stresses can lead to significantly reduced performance or even product failure. And once again—it is IMPOSSIBLE to detect the presence of such bubbles inside the ferrule after the product has been cured.

READ THE BLOG: The processes involved in Termination play a CRITICAL role in determining the long-term reliability of the product

Additional resources from the FOC team include:
- Category Resource FOC Epoxy Page
- View the Glossary, Acronyms, Military Specifications for Connectors
- Q&A Resource: email technical questions to AskFOC@focenter.com
Have questions about this FOC Tip?

Contact FOC with questions at: (800) 473-4237 / 508-992-6464 or email: FiberOpticCenter@focenter.com and we will respond ASAP.

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About Fiber Optic Center, Inc.

Fiber Optic Center, Inc., (FOC), is an international leader in distributing fiber optic components, equipment, materials, and supplies known for helping customers make the best cable assemblies in the world for over three decades. Material property consultation is provided by technical experts for lapping film, epoxy, adhesives, optical coatings, and optical plastics during application specific material selection. Technical process expertise is offered in several key technology areas. Specialized expertise includes cable assembly line mastery, fiber broadband field installation best practices, and technical advancements in telecom, datacom, data centers, and hyperscale. Optical cable specification development includes design and quality testing. FOC's impact reaches the network physical capabilities through fiber manufacturing process expertise from preform fabrication and shaping, fiber drawing, and coating requirements for double clad fibers used for high power fiber laser applications to solution doping, vapor phase doping, rare earth chelates and halide recipe consultation. Fiber Optic Center is the preferred choice for the world’s fiber professionals as the industry connection to the most innovative optical products, technologies and technical experts who integrate their manufacturing knowledge and vast experience into customers' worldwide operations. @FiberOpticCntr

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Toll Free in US: 800-IS-FIBER or 800-473-4237 . Direct 508-992-6464. Email: sales@focenter.com or fiberopticcenter@focenter.com

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