G-11 High-Temperature Glass Epoxy — Rod

G11 rod is a solid round bar made from NEMA G-11 high-temperature glass-epoxy laminate — woven glass fabric impregnated with elevated-performance epoxy resin and cured under heat and pressure. It offers 63,000 psi tensile strength and a maximum continuous operating temperature of 355°F (180°C), making it suitable for turned insulating components in high-heat industrial and electrical applications.

Ready Plastics stocks G11 glass-epoxy rod in standard diameters as cut-to-length pieces. Contact us for current diameter and length availability.

G11 rod machines similarly to G-10 rod — use carbide tooling exclusively, as the woven fiberglass reinforcement is highly abrasive. Moderate cutting speeds, positive rake inserts, and good chip clearance maintain dimensional accuracy. Dust and fiber extraction are important for operator safety when turning or drilling G11 rod.

G11 rod and G10 rod share similar mechanical properties, but G-11 uses a higher-performance epoxy resin that raises the continuous operating temperature from 280°F (G-10) to 355°F (G-11). Both carry a 94HB flammability rating. Choose G-11 when the application involves elevated temperatures that would compromise G-10's performance.

G11 rod is used for high-temperature insulating bushings, spacers, standoffs, and structural supports in transformer winding equipment, motor components, aerospace assemblies, and industrial machinery operating near or above 280°F continuous. Its 75,000 psi flexural strength and 355°F thermal rating make it appropriate where standard glass-epoxy rod grades are thermally inadequate.