G10 Insulation Gaskets Introduction and Applications

Time: 06-20 2025 Auther: Ztelec group

Introduction to G10 Insulation Gaskets G10 insulation gaskets are high-performance insulating components made by mac...

Introduction to G10 Insulation Gaskets

G10 insulation gaskets are high-performance insulating components made by machining or stamping G10 epoxy laminate sheets, which are composed of fiberglass cloth and epoxy resin. They offer excellent electrical insulation, mechanical strength, and dimensional stability, making them ideal for high-voltage, high-load, and high-reliability applications.

G10 gasket

Key Performance Characteristics

Property	Description
High Electrical Insulation	Dielectric breakdown strength ≥ 20kV/mm, suitable for high-voltage environments
Excellent Heat Resistance	Continuous operating temperature: 110°C; short-term resistance up to 130–140°C
High Mechanical Strength	Flexural strength ≥ 300 MPa, strong resistance to compression and impact
Dimensional Stability	Low thermal expansion, maintains shape in precision structures
Chemical Resistance	Resistant to oils and mild acids/alkalis; suitable for industrial conditions
Flame Resistance	G10 is non-flame retardant (use FR4 if flame resistance is required)

3. Common Applications

Insulation in Transformers and Reactors

Used between high and low voltage windings

Acts as insulating structural supports in mounting areas

Power System Accessories

Insulation spacers in high-voltage switchgear, cable terminations, and grounding systems

Electrical isolation for busbar and copper connections

Electronics and Devices

Base insulation layer for PCBs or power modules

Support gaskets within control panels

Industrial Machinery and Automation

Dual-purpose insulating and structural parts in assembly systems

g10-insulation-gasket

Machining and Specifications

Item	Details
Thickness Range	Typically 0.3mm to 20mm, custom sizes available
Shapes	Round, square, custom cut-outs, holes, slots, chamfers, etc.
Tolerance Accuracy	±0.05mm (CNC machining), ideal for precision assemblies
Surface Treatments	Optional coating, sanding, moisture-proofing, or lamination

Common FAQs

Q1: Can G10 gaskets replace FR4?
A: Yes, in non-flame-retardant applications. For UL-certified or flame-resistant uses, FR4 is recommended.

Q2: Is G10 suitable for high-humidity environments?
A: G10 has a low water absorption rate and performs well in humid environments. However, for prolonged exposure to moisture or hot and humid conditions, edge sealing or protective treatments are recommended.

Q3: Are custom drawings supported for gasket production?
A: Yes. G10 sheets can be precisely machined according to custom CAD drawings using CNC, suitable for batch production in industrial settings.

Purchasing Recommendations

Recommended Industries: Power equipment manufacturing, industrial automation, electrical control panels, railway systems

Choose Certified Materials: UL-listed, RoHS, REACH compliant

Confirm with Supplier:

Material grade, dielectric strength, density, machining tolerance, and color

Whether it’s machined from original sheets and whether it includes a fiber-locking surface treatment (to reduce fiber shedding over time)

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