G-7 is a high-performance glass-cloth reinforced silicone laminate with a natural cream-to-white color. It is made by impregnating continuous woven glass cloth with thermosetting silicone resin, providing excellent heat and arc resistance. G-7 maintains good electrical insulation even under humid conditions and performs reliably at high temperatures up to 220 °C (392 °F). While silicone may be less strong than epoxies at low temperatures, it retains superior mechanical strength after prolonged exposure above 450 °F (232℃)
YILONG
Silicone Resin + Glassfiber Cloth
White
10-200mm
1000mm
220
C
V-0
Pallet, Wooden Box
Excellent heat and arc resistance
High-temperature performance up to 220 °C
Low dielectric loss in dry conditions
Maintains good electrical insulation properties in humid or wet environments
Dimensionally stable and machinable with care
Cream-to-white natural color
Superior long-term strength at elevated temperatures
● Excellent heat and arc resistance
● High-temperature performance up to 220 °C
● Low dielectric loss in dry conditions
● Maintains good electrical insulation properties in humid or wet environments
● Dimensionally stable and machinable with care
● Cream-to-white natural color
● Superior long-term strength at elevated temperatures
| Test / Property | Unit | G-7 |
| PHYSICAL | ||
| Density | g/cm³ | 1.8 |
| Water Absorption, 24 hrs | % | 0.1 |
| MECHANICAL | ||
| Tensile Strength – lengthwise | MPa | 138 |
| Tensile Strength – crosswise | MPa | - |
| Flexural Strength – lengthwise | MPa | 207 |
| Flexural Strength – crosswise | MPa | - |
| Flexural Modulus – lengthwise | GPa | 11 |
| Flexural Modulus – crosswise | GPa | - |
| Izod Notched Impact – lengthwise | kJ/m² | 0.64 |
| Izod Notched Impact – crosswise | kJ/m² | - |
| Compressive Strength | MPa | 345 |
| Hardness, Rockwell M | — | 105 |
| THERMAL | ||
| Coefficient of Linear Thermal Expansion – lengthwise | 10⁻⁶ / °C | 1.15 |
| Coefficient of Linear Thermal Expansion – crosswise | 10⁻⁶ / °C | 1.38 |
| Max Operating Temperature | °C | 220 |
| Thermal Class | / | C |
| Flammability Rating | UL94 | V-0 |
| Thermal Conductivity | W/m·K | 0.29 |
| ELECTRICAL | ||
| Dielectric Strength (short time, 1/8" thick) | kV/mm | 13.8 |
| Dielectric Constant at 1 MHz | — | 4.5 |
| Dissipation Factor at 1 MHz | — | 0.018 |
| Arc Resistance | s | 240 |
Yes, based on drawings or samples.
UL, RoHS, REACH, CE, ISO, etc.
Usually 100 kg or 100 sheets, negotiable.
Yes, common samples free, buyer pays freight.
2-4 weeks after payment.
Yes, including labeling and packaging.
Yes, over 20 years.
T/T 30% deposit, 70% before shipment. Negotiable if supports needed.
Yes, we offer CNC machining.
Manufacturer and Exporter
No.3, Mianzhi Street, Zhucheng, Shandong, China
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