Glass Epoxy / FR4 / G10 / Garolite
High-strength electrical laminate, the modern PCB standard
Glass Epoxy (FR4/G10/G11), also known as Garolite, is a glass-fibre reinforced epoxy laminate with excellent dielectric properties — the standard material for PCB substrates and high-voltage insulation. MK Industrial & Co.® supplies Glass Epoxy sheets and rods across Bangalore and Karnataka.
About Glass Epoxy / FR4 / G10 / Garolite
Glass Epoxy (FR4/G10/G11) — also commonly known by the trade name Garolite — is a glass-fibre reinforced epoxy laminate offering excellent dielectric strength, low moisture absorption, and good mechanical strength — the modern standard for PCB substrates, replacing older phenolic laminates in most electrical applications requiring higher performance.
MK Industrial & Co.® stocks Glass Epoxy, G10, ESD Grade FR4, and glass-filled grades in sheets and rods, in Yellow, Red, Green & Black — available in standard dimensions and custom cut-to-size across Bangalore and Karnataka. Related glass-polyester grades such as GPO-3 add arc and track resistance for switchgear applications.
Glass Epoxy is specified across circuit boards, terminal boards, electrical housings, gears, bearings, pump components, and aerospace/marine structural and insulation parts.
Key Properties
| Property | Value |
|---|---|
| Density | 1.8–1.9 g/cm³ |
| Flexural Strength (perpendicular to lamination) | ≥340 MPa |
| Impact Strength (Charpy, parallel to lamination) | ≥33 kJ/m² |
| Insulation Resistance (after water immersion) | ≥5.0×10⁸ Ω |
| Dielectric Strength (perpendicular, transformer oil) | ≥14 kV/mm |
| Breakdown Voltage (parallel, transformer oil) | ≥40 kV |
| Permittivity (1 MHz) | ≤5.8 |
| Water Absorption | ≤20 mg |
| Arc Resistance | 80 s |
* Values above are from our supplier technical data sheet for FR4 Green Glass Epoxy sheet.
Available Grades
Typical Applications
MK Industrial & Co.®
Premium engineering polymers — sheets, rods & tubes — supplied and custom-cut across Karnataka & India since 2020.