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3255 Modified Diphenyl-Ether Glass Laminate – 3255 electrical insulation board manufacturer, factory direct export
3255Epoxy Glass LaminatesFactory DirectCNC Cut to Size

3255 Modified Diphenyl Ether Glass Cloth Laminate Sheet

3255 is a modified diphenyl ether glass cloth laminate with Class H heat resistance, designed for high-temperature electrical insulation where standard epoxy grades are insufficient.

Standard / GradeIEC / GB 3255
Base MaterialE-glass cloth + modified diphenyl ether resin
ColourBrown / yellow
Density≈ 1.85–1.95 g/cm³
Thickness Range0.5 mm – 50 mm
Sheet Size1020×1220 mm · 1220×2440 mm
Operating Temp.Class H (180 °C)
Dielectric Strength≥ 14 kV/mm (perpendicular)
Flexural Strength≥ 340 MPa
Water Absorption≤ 0.10%
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Key Advantages

Why Choose Our 3255

🌡️

Class H Heat Resistance

Continuous service up to 180 °C for the most demanding thermal applications.

⚡

Stable Insulation

Maintains dielectric performance at high temperatures.

💪

High Strength

Flexural strength ≥340 MPa with good dimensional stability.

📐

Machinable

CNC cut and machined to finished high-temperature insulation parts.

Description

3255 Modified Diphenyl Ether Glass Cloth Laminate

3255 modified diphenyl ether glass cloth laminate is a high-temperature insulation board built on a modified diphenyl ether resin system that delivers Class H (180 °C) heat resistance — well above the standard epoxy grades.

It maintains stable dielectric performance and high flexural strength (≥340 MPa) at elevated temperatures, making it suitable for Class H motors, high-temperature transformers and heating equipment insulation. Low water absorption ensures consistent performance.

We supply 3255 from 0.5 mm to 50 mm thick as sheets or CNC-machined parts, with factory-direct export to the USA, Mexico, Brazil and Europe.

Applications

Typical Uses

Class H Motors
High-Temp Transformers
Heating Equipment Insulation
Switchgear
Terminal Boards
Insulating Parts
Bus Bar Supports
Industrial Electrical Equipment
FAQ

Frequently Asked Questions

What temperature can 3255 withstand?

3255 is Class H rated for continuous service up to about 180 °C, higher than standard epoxy glass laminates.

What is 3255 made of?

3255 is based on a modified diphenyl ether resin reinforced with woven glass cloth, giving it superior high-temperature performance.

What is 3255 used for?

3255 is used in Class H motors, high-temperature transformers, heating equipment insulation and switchgear.

What thicknesses are available?

We supply 3255 from 0.5 mm to 50 mm thick in standard and custom sizes, plus CNC-cut parts.

Do you export 3255 worldwide?

We export 3255 to the USA, Mexico, Brazil, Europe and globally, with free samples and full documentation.

Order 3255 Direct From The Factory

Get a factory-direct quote, free sample and CNC cutting to your exact dimensions within 24 hours.

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