Epoxy fiberglass tubes, also known as epoxy glass tubes or fiberglass reinforced epoxy tubes, are widely used in modern electrical and industrial applications. They are manufactured by impregnating woven glass fiber cloth with epoxy resin, then curing it under high temperature and pressure to form a rigid, high-strength tubular insulation material.
These tubes combine excellent mechanical strength, high dielectric properties, and outstanding thermal resistance, making them a top choice for many demanding environments.
Epoxy glass fiber tubes offer a unique set of performance advantages:
High mechanical strength – resists impacts, crushing, and mechanical stress
Superior electrical insulation – maintains dielectric strength even in humid or high-temperature conditions
Excellent thermal stability – typically supports continuous use up to 155°C or higher
Chemical resistance – withstands oils, solvents, and transformer fluids
Dimensional stability – low shrinkage and deformation under load
Thanks to these properties, epoxy glass fiber tubes are a dependable choice for mission-critical insulation tasks.
Epoxy glass fiber tubes are found in a wide range of industries and equipment, including:
Transformers: Used as insulation cylinders, lead exit tubes, and structural supports within oil-immersed and dry-type transformers. The tubes help separate live conductors while maintaining structural rigidity.
Electric motors: Often used for slot insulation, coil supports, and rotor shaft insulation. Their high mechanical strength ensures that they can withstand strong centrifugal forces in rotating machinery.
Switchgear and control panels: Serve as insulating supports and barriers, preventing short circuits and providing safe clearances between live components.
High-voltage applications: Provide creepage distance and insulation in high-voltage bushings, circuit breakers, and disconnect switches.
General industrial uses: Applied as structural or protective sleeves in mechanical assemblies, thanks to their durability and dimensional accuracy.
Another reason epoxy glass fiber tubes are so popular is their excellent machinability. They can be easily cut, turned, milled, or drilled to fit precise mechanical designs, making them highly flexible for customized solutions.
Manufacturers appreciate their consistent quality and predictable performance, which reduces assembly errors and improves system reliability.
Future Prospects of Epoxy Fiberglass Tubes
With growing demands for higher energy efficiency and safer electrical systems, epoxy glass fiber tubes will continue to be a core insulation material for the future. Their ability to combine mechanical robustness, electrical insulation, and easy processing makes them highly competitive in transformer manufacturing, motor engineering, and high-voltage switchgear design.
Epoxy fiberglass tubes are a critical component for many electrical and industrial systems. They deliver reliable insulation, structural integrity, and long service life even in harsh environments. If you need high-performance insulation materials for your next project, epoxy glass fiber tubes are a proven, cost-effective, and future-ready choice.
For customized epoxy glass fiber tubes and technical support, feel free to contact our team today.
