G-7 - Glass Silicone

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Key Characteristics of G-7

G-7 is a high-performance thermoset composite material made from woven glass fabric impregnated with a silicone resin. 

 

The material is known for its exceptional electrical insulation properties, particularly at high temperatures, making it a valuable material for demanding electrical applications.

 

G-7 exhibits excellent heat resistance, performing reliably at temperatures up to 220°C (428°F). This material also offers good mechanical strength, maintaining its structural integrity in high-stress environments.

 

G-7 has low moisture absorption, contributing to its dimensional stability in humid conditions, and it provides good chemical resistance, ensuring durability when exposed to various chemicals.


This advanced materials is also flame-resistant, making it ideal for use in high-heat environments where fire safety is a priority.

How It's Used: Applications of G-7:

Explore how this composite material is used across industries: 

 

High-Temperature Electrical Insulation: G-7 is widely used in electrical applications that require reliable insulation at elevated temperatures, such as transformers and high-voltage equipment.

 

Heater Insulation: Due to its ability to withstand extreme heat, G-7 is used in components that insulate industrial heaters and high-temperature equipment.

 

Terminal Boards: G-7’s high dielectric strength and heat resistance make it ideal for terminal boards in electrical systems that operate at high temperatures.

 

Aerospace Applications: In aerospace, G-7 is used for electrical insulation and structural components that require durability in extreme temperatures.

 

Arc Barriers: The material’s flame resistance and dielectric properties make it an excellent choice for arc barriers in high-voltage systems.

 

Switchgear Insulators: G-7 is often utilized as an insulator in switchgear, ensuring reliable operation in environments with high electrical and thermal demands.

Technical Specifications: G-7

Explore the mechanical and structural properties of Ready Plastic G7

Military/Fed Spec: Mil-1-24768/17 Type GSG
Specific Gravity: 1.78
Tensile Strength (psi): 18,000
Comp. Strength: 45,000
Flexural Strength (psi): 25,000
Hardness, M Scale: 105
Bond Strength: 900
Shear Strength (psi): 17,000

Dissipation Factor, 10 cycles, Cond A: 0.003
Dielectric Constant 10 cycles, Cond A: 4.20
Electric Strength V/MIL Cond A: 400
Flammability Rating: 94V-0
Max. Oper. Temp C/F: 220/428
Coeff. Thermal Exp. IN/IN/C x 10-5: 1.00
Water Absorption %-24 hrs: 0.20
Izod Impact Strength (ft/lb/in) @ 49 C: 6.50