8297 Highheat Epoxy Putty, 2 Oz

J-B Weld HighHeat is a hand-mixable epoxy putty stick formulated to bond and repair materials exposed to high temperatures in automotive and industrial maintenance applications. It cures to a tough, hard bond with little to no shrinkage, making it ideal for exhaust systems, engine blocks, mufflers, tail pipes, and other heat-stressed components.

This industrial-strength product significantly outperforms conventional epoxy putties when subjected to high heat. Unlike standard epoxies that may fail or weaken under extreme temperatures, HighHeat maintains superior bonding strength and structural integrity where temperature extremes would compromise lesser products. It is engineered for demanding repairs where reliability is essential.

Features and Benefits

• Superior High-Temperature Performance: Three times stronger at high temperatures than conventional epoxy putties, with tensile strength of 800 PSI at room temperature and 600 PSI at 400°F.
• Extreme Heat Resistance: Withstands continuous heat up to 450°F and intermittent heat up to 500°F, making it suitable for exhaust manifolds, mufflers, and engine components.
• Fast Initial Set: Sets in 1 hour at room temperature, reducing downtime on repairs and projects.
• Machine Grey Color: Cures to a machine-grey finish that blends seamlessly with most metal parts and surfaces.
• Fully Machineable: After 8 hours, the cured putty can be drilled, tapped, machined, ground, filed, and painted to match surrounding surfaces or achieve desired specifications.
• Hand-Mixable: Hand-mixable epoxy putty stick that bonds and repairs heat-exposed materials with a tough, hard bond.

Specifications

• Brand: J-B Weld
• Model: 8297
• Net Weight: 2 oz.
• Color: Machine grey (beige/gray)
• Tensile Strength: 800 PSI at room temperature; 600 PSI at 400°F
• Continuous Heat Rating: Up to 450°F
• Intermittent Heat Rating: Up to 500°F
• Initial Set Time: 1 hour at room temperature
• Full Cure Time: 8 hours (can be drilled, tapped, machined, ground, filed, and painted after this time)
• Shrinkage: Little to no shrinkage